Rest ios jobs

I'm looking for a virtual assistant to help me manage interactions on my Facebook and Instagram profiles. Your main task would be to reply to 1000 comments on these platforms, a one-off job. My preference is for a mix of personalized and generic replies, as appropriate. I will have the rest written already and must be done NOW! Urgent work Ideal skills and experience include: - Proven experience in social media management - Excellent written communication skills - Ability to strike the right balance between personalized and generic responses - Familiarity with Facebook and Instagram platforms Your role will be crucial in maintaining and boosting the engagement on my profiles. It's a one-time job to start with, but if the collaboration goes well, there may be potential f...

I'm looking for a skilled app and website developer who can assist in shifting my transport business online. Key deliverables include both a website and mobile application compatible with iOS and Android devices. Though I haven't specified features yet, expect to incorporate industry-standard functionalities that boost ease of use and customer satisfaction. Ideally, candidates will have prior experience in transport or logistics app and web development.

I am in urgent need of a proficient mobile app and web developer to create a robust platform titled 'Legal Connect' that will serve as a bridge for effective communication between lawyers and their clients. Crucial Task Details: * The app needs to be dynamic and accessible from iOS, Android, as well as Web platforms - a wide reach is essential. * Key features that need to be integrated include: secure document sharing, intuitive appointment scheduling, seamless case tracking, ensuring up-to-date case details at everyone's fingertips. * The project has a strict deadline and needs to be completed and ready for use within a month. Desired Skills & Experience: * Proven expertise in cross-platform app development * Strong understanding of secure file sharing p...

I'm in need of a comprehensive College Guide for Kerala that will help me to travel through Kerala and take us to college and get place to take room. This guide should include: - Take us to the college campus we provide - Take us to cheap rooms for taking rest The primary goal of this guide is to serve as a comprehensive resource for engaging us with various colleges. I'm looking for a freelancer with experience in educational research and understanding of Indian college systems. Previous work in similar projects is a big plus.

I'm looking for a skilled iOS developer to create a billing app using SwiftUI and Combine. The Android app's development build will be provided, which includes a screen showing a list of the APIs with details like requests, headers, etc. There are multiple modules in the app, such as Accounts, Customers, Stock, etc. We can set milestones based on these modules. The project is already set up, and some functionalities are already working, including the API layer. The code is very clean and easy for any developer to understand. Further details will be given on a call. We need a productive developer who creates pixel-perfect code. Experience does not matter; you must test the features you create.

...the Apple Store. I'm seeking an experienced professional who can handle the deployment process efficiently and ensure the app meets all Apple's requirements. Key Requirements: - Experience in deploying Flutter apps to the Apple Store - Proficient in managing Apple Developer accounts and app credentials - Understanding of iOS deployment best practices and standards The project doesn't involve any complex features that require special permissions or configurations for iOS deployment. Your primary focus will be on the deployment process itself, ensuring the successful listing of the app on the Apple Store. Your role will include: - Verifying the Flutter project for Apple Store compliance - Handling the deployment process from start to finish - Ensuring that ...

I need a skilled WordPress developer to add a registration form to my website. Specifically, I need you to: - Implement a user-friendly registration form on my WordPress website. - Ensure the form includes standard fields like Name, Email, Username, and Password. - Integrate the form seamlessly with the rest of the website. Ideal Skills: - Proficient in WordPress development. - Experience with implementing registration forms. - Attention to detail to ensure the form is user-friendly.

...this aesthetic. Given that the main purpose of this website is to display information and a portfolio, the design should be clean, uncluttered, and user-friendly. Job Responsibilities: • Should have intermediate understanding and working knowledge of WordPress • Designing and building the website front-end • Knowledge of front-end technologies including CSS3, JavaScript, HTML5 and jQuery and REST/API integration • To understand and work with various page-layout and eCommerce plugins and to add images, icons, and vectors that function on desktop- and mobile-friendly web pages • Interest in conducting research and learning new things to overcome challenges • Conducting website performance tests • Monitoring the performance of the live web...

JOB ONLY for freelancers form CHINA MAINLAND I need of a proficient iOS app tester to help me with my social networking app. The application is designed for iPhone users and will have the primary feature of sharing location. Key Responsibilities: - Review the app's overall functionality - Confirm that the location tracking feature operates correctly - Suggest improvements for user experience Ideal Candidate: - Proficient in iOS app testing - Understanding of location tracking functionalities - Experience with social networking apps is a plus Please provide any relevant experience you have in this area, and explain your approach to testing a social networking app. Your suggestions for improving the location tracking feature are also highly appreciated.

I'm in need of a complete e-commerce platform of a website, native Android and iOS micro services application.

I require a comprehensive wireframe design for a mobile application. - The wireframe will be intended for both iOS and Android platforms. - The application will require user authentication and user profiles. - The primary goal will be shared after the IP Agreement is signed The ideal candidate for this project will have: - Experience in designing wireframes - Experience with Figma - Proficiency in wireframing tools. - Strong understanding of user authentication and user profile design. - Knowledge of iOS and Android design guidelines. Please provide samples of your previous work and explain your experience in this area in your proposal.

I'm looking for a talented mobile app developer, well-versed in Flutter, to create a cross-platform application. Here are the key aspects of the project: - Compatibility: The mobile app should be compatible with both iOS and Android platforms. - Primary Function: The primary function of the app will be OCR (Optical Character Recognition). This means the app should be able to recognize and extract text from images. - Data Extraction: The OCR function should be specifically designed to extract text from images and past that text in new screen and make search in that text for list of words if it in that text make it highlighted with different screen for user to write list of the text must be translated to user selected there must be user profile and sign and

I require a skilled MERN developer who can also work with Flutter, for a month-long project focusing on developing a mobile application. Key Deliverables: - Develop a mobile application using Flutter - Ensure the application is compatible with both iOS and Android platforms Ideal Skills: - Proficiency in MERN stack - Strong experience in Flutter - Previous experience in mobile application development - Ability to work with both iOS and Android platforms The project is time-sensitive, so promptness in delivering quality work is a must.

I'm in need of a comprehensive, multi-tasking personal assistant AI to support me in a variety of ways. In addition to the standard tasks like scheduling appointments, ma...It's important for me to track my calorie intake, so I'll need you to help me with this. - Heart Rate: Monitoring my heart rate and keeping track of this data. The ideal candidate for this job should have experience in creating and managing AI personal assistants. You should also be proficient in integrating these assistants across multiple platforms, as I will need you to make it compatible with iOS, Android, and web browsers. Your attention to detail and ability to multi-task effectively will be key in this role. I'm looking for someone who can streamline my daily activities and provide ...

As a service provider for mobile truck tyre maintenance and repairs, I am seeking a knowledgeable freelancer to build a cross-platform mobile application for both iOS and Android. This application is envisioned to transform our approach to maintaining fleets and managing stock, and facilitating seamless communication with our workshop. The application should include the following features: - Fleet Maintenance Organisation: An effective and user-friendly system to manage our service schedules and gather data on both maintained and pending cases. - Comprehensive Service Dockets: Tools to record detailed information on every job, including automatic cell population for standard information. - Stock Management: Features to keep track of tyres and other parts available in each of our...

I am in need of a specialized iOS application designed to discreetly monitor a person's phone activity, which includes messages, apps, and call logs. This will aid in suspending any underlying suspicions of infidelity. - Requirements: Monitoring should be both real-time and also allow for data retrieval for later viewing. - Ideal Skills: App development, iOS programming, data retrieval, security-focused development. Please note: Respect for personal privacy and legal boundaries is paramount. The application should be developed keeping in mind the proper ethical considerations. A strong understanding of the privacy laws related to such software will be highly valuable.

I'm in need of a seasoned Flutter Developer, proficient in creating cross-platform mobile applications for both iOS and Android. The core function of the app is to serve as a dynamic and interactive social networking platform. Key features of the job include: - Experience in previous mobile app development projects - Strong knowledge and expertise in Flutter - Proven track of record in creating social networking apps Your responsibilities: - To design and build a responsive and user-friendly social networking app - Ensure that the app is compatible and fully functional on both iOS and Android platforms. Your expertise in the techniques and trends of social networking apps will be greatly valued.

READ BEFORE BIDDING!!! I'm currently looking for a Expert Senior Developer for a Short-Term commitment for Ongoing Mobile App's Phase II Firstly starting the Android Upgrade and then iOS and Web Admin Panel's works will be started. *Phase II Features with Allocated Budgets for Android App 1. Integrate Google In App Purchases = 150USD 2. Welcome (3)Pages = 100USD 3. Integrate New SMS OTP API = 30USD 4. Fix Minor Note Issue = 20USD 5. Set the App to All countries in Playstore = 20USD 6. Speed up the App = 30USD 7. Tips for Deliver Ontime in 7 Days = 50USD Total = 400USD (BUDGET IS ROCK SOLID) Required Skills: - Kotlin and Swift for mobile apps - Node for BackEnd - ReactJs for Web Admin panel Additional Requirements: - (NDA) and (IP) Make your you read everythi...

I'm a beginner wanting to learn how to create my first React Native app. I'm interested in building a simple multi-page app for both Android and iOS. Ideal candidates should have: - Proficiency in React Native and mobile app development - Prior experience in creating multi-page applications - Excellent communication skills to teach a programming novice like me

I'm seeking a proficient developer to create a tools app locker. Key elements to be implemented: - No need for Screen Time API integration. - It should focus on Shield Action Extension. Ideal Skills and Experience: - Screen Time APi experience. - Shield Action Extension experience - Knowledge in iOS App development. Bidders with a proven track record in similar projects will be prioritized. It's not mandatory, but examples of your previous works will give you an edge. Looking forward to seeing your bids! I will give bonus if free lancer can provide a simple demo Please say "Android" at top of your proposal, it will be filtered

I am seeking an app developer to create a mobile app for both iOS and Android. The key functionality of this app will be to provide highly customized, individualized meditation programs. Features Needed: - User Profiles: to collect personal information and preferences - Customizable Meditation Programs: based on the user's individual profile - User-friendly interface The mobile app should be functional and user-friendly, guiding the user smoothly through their personalized meditation program. Ideal Skills & Experience: - Mobile App Development for both iOS and Android - Experience in personalization and customization of apps - Prior work with wellness and meditation apps would be a plus. If you fit the bill, I look forward to your bid.

I'm seeking a proficient developer to create a tools app locker. Key elements to be implemented: - No need for Screen Time API integration. - It should focus on Shield Action Extension. Ideal Skills and Experience: - Screen Time APi experience. - Shield Action Extension experience - Knowledge in iOS App development. Bidders with a proven track record in similar projects will be prioritized. It's not mandatory, but examples of your previous works will give you an edge. Looking forward to seeing your bids! I will give bonus if free lancer can provide a simple demo Please say "Android" at top of your proposal, it will be filtered

...on both iOS and Android platforms, with the core feature being live streaming. Users should be able to access the live video feed through the app. Key Requirements: - Integration with Zoneminder: The live video source for the app will be Zoneminder. Experience with this platform would be an advantage. - Cross-Platform Development: The app must be developed for both iOS and Android to reach a wider audience. - Live Streaming: The main functionality of the app is the ability to stream live video. Prior experience with video streaming is desirable. - User Registration and Login: The live streaming feature should be accessible only after a user has registered and logged in to the app. Appropriate security measures should be implemented. Ideal Skills and Experience: - Profic...

...that allows my customers to fund their betting accounts with the help of MobCash API. The application should be available on both iOS and Android platforms. Design and UI/UX: - Although I don't have a specific design in mind, I want the application to be user-friendly and intuitive. I am open to suggestions and ideas for the design and user interface. Additional Features and Functionalities: - Besides the MobCash API integration, I am not sure about any additional features or functionalities that I may require. I am open to suggestions and recommendations from the developer. Ideal Skills and Experience: - Experience in developing mobile applications for both iOS and Android platforms. - Strong understanding of API integration, specifically with MobCash API. - Abil...

I'm looking for a skilled React Native developer for api integration , skins and postman collection is ready. Total 13 apis Key Requirements: - Proficiency in React Native for both iOS and Android platforms - Prior experience in developing e-commerce applications - Ability to implement custom features as per the requirements of the project - Strong understanding of user profiles & authentication, product catalog & search, and shopping cart & checkout process Your primary focus will be on creating a seamless e-commerce experience for customers through the implementation of custom features. Your expertise in React Native will ensure the application is user-friendly, reflects the brand's identity, and meets the specific project requirements. Ideal Skills and ...

ATTENTION: This is not a project to create a 3D model. It's to create a sample mobile app in Flutter. I need a 3D object renderer programmed in Flutter for PLY files. The intended purpose is visualization rather than animation or virtual reality. The selected candidate should possess: - A strong knowledge of Flutter and 3D rendering techniques. - Previous experience in creating high-quali...renderers, as this project demands a high-performance level. The renderer should include the following functionalities: - The ability to rotate objects. - Zoom in and out capabilities. As an expert in this field, you're expected to provide advice on the best techniques and practices to achieve a high-quality 3D object visualization. The Flutter project need to be executable on both And...

I’m seeking a skilled developer to convert my existing PortVB Desktop App into an iOS/Mac Desktop App. It a small tool that runs on a Windows PC and reads some flat XML files and inserts/updates a mySQL database. We need the same program to be able run on a iOS/Mac desktop. I have all the VB Project files/ Source code. - Skills in app development for iOS/Mac, ideally with previous experience in app conversion - Knowledge of data syncing, user authentication, and offline access, in case these features need to be incorporated - Familiarity with contacts management, communication, scheduling, calendar integration, and file/document management functionalities for potential focus areas - Creative design skills to potentially revamp the user interface and overa...

...developer to create Rest API(s) that will facilitate user customization of a default travel itinerary. The APIs should have the following features: - Loading Default Itinerary: The API should be able to load the default itinerary, which consists of a list of attractions for each day. - Information on Nearby Places: The API should provide information on nearby places that are not in the default itinerary but could be of interest to the user. - Place Details: The API should also be able to provide detailed information about each place listed, such as the time required for a visit, the best time to visit, and any other relevant details. The ideal candidate for this project should have: - Proficiency in Java, as the Rest API(s) need to be developed in this language. - Exper...

I'm in need of an experienced app developer to make updates and improvements in an already built app, and who can seamlessly integrate with the system and other RTOs used in Australia Requirements: - Expertise in iOS app development - Proficiency in API usage and system integration - Familiarity with Axcelarate is preferable but not required Key Functions: - This application needs to be able to pull and display data from Axcelarate via API. As an app developer applying for this project, you should have a strong grasp of API integration and a proven track record with iOS application development.

I'm looking to have an iOS app developed that allows users to complete a questionnaire and receive personalized feedback as a result. Key Features: - The app should only be available on iOS devices. - It should not require users to create an account, enabling them to use it anonymously. - The questionnaire should provide personalized feedback based on the user's responses. Skills and Experience: - Proficient in iOS app development, with a portfolio of completed projects. - Experience in developing apps that handle user data securely and anonymously. - Prior work on applications that generate personalized content or feedback for users would be a plus. I'm open to hearing your suggestions on how to best implement this idea, and I'm looking for an ...

I am in need of a talented app developer who can design and create a mobile application compatible with both iOS and Android platforms. The primary objective of this app will be to aid with the tracking of a game. This must consist of a few specific features: - Allows player to input total points for each category - Ability to track and deduct cost from the players inputted total "points" for the category - Output purchased skills / spells into a final screen with buttons for each skill or spell purchased that when pressed are marked as "used" - Reset button which takes all current purchased skills or spells back to unused state - Ability to save "battle board" - the final screen of selected skills / spells - to be loaded later or switched with anothe...

I'm looking for a skilled iOS and android developer to create an application aimed at adults and teenagers. Key features needed: - Tracking Services: The application should be able to provide real-time tracking services for various needs. Ideal Skills: - Experience with android and iOS platform application development - Knowledge of real-time tracking services integration - Familiarity with creating applications for adults and teenagers

I'm seeking a highly experienced web and app developer to create a top-tier informational website and corresponding Android and IOS applications. Key Functionalities: - The website and applications should be rich in features to provide a seamless browsing experience for the users. - I require a blog section that is easy to navigate and manage. - A robust contact form that seamlessly connects to my email system. - A subscription option for users to stay updated with the latest information. Page Estimation: I anticipate the website to have between 5-10 pages. Ideal Skills and Experience: - Proficiency in website and application development for both Android and IOS platforms. - Strong experience in building informational websites with the required features. - Knowled...

I have a iOS application with a few bugs that needs fixing and adding the function of inviting phone contacts to our app. iOS application built in: - Objective C - Native App and UIKit I will share the specification document when we speak in freelancer chat.

Help add search filter to iOS Swift App that exposes the selected items in the array (selected indexes) and the selected index if only 1 is returned.

I'm in need of a Point of Sale (POS) interface that works on both Android and iOS devices. The main functionality requirement for this interface is barcode scanning. Additionally, I need this POS interface to support multiple user profiles, each with their unique access levels. Key Project Requirements: - Develop a Point of Sale interface that functions on Android and iOS platforms. - Implement barcode scanning capabilities within the interface. - Create a multi-user system with different access levels for each user. I'm looking for a developer with experience in: - Android and iOS development - Barcode scanning integration - User management systems

I'm looking for a talented logo designer to create a logo for my electrical company, Everglow. Key Points: - Colors: I've attached the primary colour palette, the blue (#235784) is the main colour the rest are accent colours. The logo must also work as a white variant for uniform and websites etc. - Style: I'm particularly keen on a minimalist design, something that is simple yet eye-catching. I want it to give off a modern vibe. Attached is one we designed on a logo generator and have used up until now. - Type: The logo should be primarily text-based, although I'm open to subtle, creative touches for an added layer of depth. Ideal Skills and Experience: - Proven experience in logo design, with a strong portfolio of minimalist designs. - Proficiency in using ...

I'm seeking an experienced app developer to create a business mobile application that's compatible with both iOS and Android platforms. Key Features Required: - Integration with a payment system to facilitate transactions within the app. Ideal Candidate Skills: - Strong cross-platform development experience (iOS and Android). - Proven track record in integrating payment systems in apps. - Familiar with creating robust, secure financial transaction systems. - Solid understanding of UI/UX for business apps on both platforms. Please include examples of business apps with payment integration you've previously developed in your proposal. Thanks!

I need an iOS app designed for college recruitment information and news. This app will cater to a target audience interested in college recruitment. It should be easy to navigate and provide informative blog posts. Key elements must include: - Smooth navigation for ease of use - Engaging and rich content writing for blog posts - 3 Pages: College Coaches Needs Blog Post, New Trends, College Tools and attachments to download from there. - Constant updates about college recruitment news Ideal Skills: - Experience with iOS App development - Understanding of the education sector – specifically, college recruitment - Strong writing skills for blog posts - Ability to ensure secure and private user experiences is essential.

I'm seeking an AI developer to create an AI Resume Creator. The primary focus of this project is to take a normal CV / Resume and format it into our company format. It's quite a simple process, populated some fields, removing personal details and then coping the rest of the text into our format. We would want to be able for the AI to use the template we create and it check it each time to make sure we havent updated anything. We would drop the resume / CV into one folder then it would be added to another folder formatted. Ideal Skills and Experience: - Strong background in AI and Machine Learning - Experience in NLP and chatbot development - Proficiency in creating customizable sections for user-friendly interfaces - Understanding of how to analyze user's skills f...

I'm seeking a skilled iOS and Android developer, with proven experience in designing and building complex, subscription-based applications. Features: - An intuitive interface facilitating life coaching, psychotherapy and addiction services, coupled with comprehensive course content. - Rich profile pages that offer an in-depth view for each user. - Direct messaging capabilities for seamless communication. Activity Tracking: A core element of this app is the tracking of users’ activities. This entails: - Sleep tracking: To monitor and analyse the user's sleep patterning. - Mental health tracking: A holistic mental health tracker incorporating mood patterns, meditation frequency and daily tasks check-in. Subscription: - A Monthly subscription option is needed, re...

I'm looking for an experienced developer to create a Flag Status Alert app for both iOS and Android. The app will notify users when to fly the flag at full or half-staff based on their state. The information could be obtained from all 50 state and territory governor pages and the White House website or through a manually updated database. Key Features: - Development for both iOS and Android platforms - Implementation of user notification features including push notifications, email alerts, and SMS alerts. Ideal Skills and Experience: - Proven track record in developing and launching user-friendly mobile applications for both iOS and Android - Familiarity with APIs and web scraping to acquire real-time data from government websites or the ability to create a reli...

I'm looking for a talented app designer to create an app that will serve as a job portal in the movie industry. The app will be available on both iOS and Android platforms. Key Features: - User Profiles: Users should be able to create and maintain profiles showcasing their work and experience in the movie industry. - Push Notifications: The app should feature push notifications to keep users informed about job opportunities and industry news. - Search Functionality: A robust search functionality is crucial for users to easily find relevant job postings. Ideal candidates should have experience in app design, particularly in developing user-centric and intuitive interfaces. Knowledge of job portals, or similar platforms, will be an added advantage. Your work will directly impac...

I'm in need of a skilled app developer to create a B2B sales app for both iOS and Android. The app’s main objective is to facilitate business-to-business sales. Key Features: - Award Distribution: The app should have a feature that allows the distribution of awards among users. - User Experience: Ensuring a smooth and intuitive user experience is crucial for this app's success. - User-to-User Exchange: Implementing a user-to-user exchange option is a necessary feature to support B2B sales interactions. Ideal candidates should have: - Prior experience in developing cross-platform apps (iOS and Android). - Strong understanding of B2B sales and the features that facilitate this type of transaction. - Skilled in creating user-friendly interfaces with a focus on...

I require a skilled mobile app developer to create a comprehensive auction app for both iOS and Android platforms. This app will be focused on the auctioning of collectibles, and as such, must cater to the unique needs of this niche. Key Features: - Bidding System: The app should have a robust bidding system that allows users to place bids on items in an intuitive and engaging manner. - User Profiles: Users should be able to create profiles, view their bidding history, and manage their auctions effectively. Key Points: - The primary focus of this app is collectibles. Experience in developing similar niche market apps is a plus. - Please ensure that the UI/UX of the app is user-friendly and engaging, especially during the bidding process. - The app will NOT require an integrated pa...

I'm in need of a skilled UI/UX designer for a medical app I'm developing. The app will be available on both iOS and Android platforms, and is designed to provide users with medical opinions using AI. Key features to be included in the app are: - Diagnosis Suggestions: The app should provide users with accurate diagnosis suggestions based on their reported symptoms. - Symptom Checker: A symptom checker that helps users identify the possible medical conditions related to their symptoms. - Medical Records Storage: A secure and easy-to-use medical records storage system, allowing users to keep track of their health history. Ideal candidates for this project should have: - Proven experience in designing UI/UX for mobile applications, particularly in the medical or healthcare ...

...application that will offer food delivery services alongside cab booking. I want this app to be available on both iOS and Android systems. Here's the primary features that I'm looking for: - **Real-Time GPS Tracking**: I want my users to be able to track the delivery of their food or the location of their cab in real-time. - **In-App Payment System**: A seamless and secure payment system that ensures a smooth transaction experience for my users. - **Ratings and Reviews**: A feature that allows users to rate and review the quality of both the food delivery service and the cab service. Ideal Skills and Experience for this job: - Proficiency in developing cross-platform applications for iOS and Android. - Experience in integrating GPS tracking systems. - Previous ...

I'm in need of an experienced UI/UX Designer for an iOS app dealing with style and fashion. Core Functionality: - The app is essentially a style and fashion app. It uses AI to help people look their best. - The main functionality of the app is to provide a virtual try-on for clothing, offer color matching suggestions and give personalized style recommendations. Target Audience: - The app is designed for both men and women. Ideal Skill Set: - Previous experience working on fashion or style-related apps is a plus. - Knowledge of AI integration for virtual try-on features is highly desirable. - A keen understanding of color theory and style is important. - Ability to create user-friendly and visually appealing interfaces. - Strong communication skills to understand and interpre...

As part of my endeavor to secure my systems, I am seeking an ethical hacker to primarily focus on data security. By extensively exploring the potential weaknesses and vulnerabilities, your ...vulnerabilities and security loopholes * Devise strategies to fortify the data security dimensions against malicious hackers The ideal candidate should possess: * Extensive experience in ethical hacking and data security * Strong analytical skills and a keen eye for spotting weaknesses and vulnerabilities in data security * Ability to devise actionable strategies to address the identified issues Rest assured, full access to the necessary systems will be granted for the successful execution of the job. Please note that a thorough professional background check will be performed before access ...

We're looking for a freelancer to take and upload live photos of 8 Rittenhouse / Center City bars in Philly. This is for a Philly bar iOS app, aimed at providing real-time updates to users regarding the bars' lines and interiors. Key Responsibilities: - Taking live photos of bars from 9pm-1am on Friday and Saturday night. - Uploading the photos to the app promptly. Photo Guidelines: - Photos must be taken on an iPhone and uploaded to our iOS app