Mobile App - Exchange GPS coordinates without internet connection

Consider the following scenario. There are two users Adam and Bob. Both are together on vacation in a foreign country. Both of them have their mobile with them (Adam uses an iPhone, Bob an Android device), but none of them has an active internet connection due to high roaming fees. Now Adam and Bob accidently loose each other on that trip. Sure they could call each other, but that would be expensive. It would be easier if they would have an app, that would point to each other. So here is what I need:

I want an mobile app that runs on both Adams and Bobs mobile which is able to exchange GPS coordinates via SMS (the receiving of the SMS containing the GPS coordinates should be hidden from the user if possible). The receiving side of the application should read the coordinates, compare them to its own location and then display an arrow pointing to the received GPS coordinates including the distance (see attached image for an example).

The application should somehow ensure that costs created by SMS should be as low as possible. I dont want an app that sends GPS coordinates every 5mins or so automatically. The best case would be if one user can send some form of solicitation via SMS and then can receive automagically the coordinates of his friend.

I am happy to hear your thoughts and bids about this small project.

Thanks in advance, Matthias!

Skills: Android, iPhone, Mobile App Development, Objective C, Xamarin

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About the Employer:
( 0 reviews ) Obfelden, Switzerland

Project ID: #17138812

26 freelancers are bidding on average €691 for this job


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Hi there, Hope you are doing good!!! I have gone through your requirement regarding "Mobile App - Exchange GPS coordinates without internet connection" project and found this to be a perfect match. I am confident t More

€555 EUR in 10 days
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Hello,Matthias! I m fulltime available for work , I have 6 years of experienced on mobile application and development web services native and hybrid application with android studio ,xcode swift ,objecive C , I More

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Hi, I am a developed iOS and Android app with 3+ years experience and i have used the auto layout for design, use the latest Swift language version for development and also fully knowledge of Objective C for iOS. More

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Hello. My name is Alexander, I'm from Ukraine (UTC +2). I have passed major tests, for more information about my skills you are welcome to check my portfolio. For now, I work more for feedback. You can be sure th More

€555 EUR in 10 days
(3 Reviews)

Dear Matthias! I checked your job carefully. In your post , capturing gps data without internet is important, I think. If phone has gps, sensor, it is possible. And, we can use satellite connect for gps data. I ha More

€555 EUR in 10 days
(9 Reviews)

hello,sir. I'm a professional programmer with 6 years of experience. I've already done this kind of project before. If you award me, I'll implement all of your requirements in a short time. Mobile App - Exchange GPS c More

€555 EUR in 4 days
(4 Reviews)

Hi Sir, Glad to read this project as I did this things a few weeks back in Android. Its currently in testing phase but I am sure I can send you working demo... I can do this in Android in next two days... and For IOS I More

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(18 Reviews)

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Hello, I have extensive experience with Xamarin development (both Android and iOS). I think I understand the flow you need: 1. Alice and Bob get seperated 2. Alice chooses Bob from a list of contacts to loca More

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Hi you have a smart idea. I can build apps that can read Gps coordinates and send by sms. The app will calculate distance ( straight line ) by use its coordinate and the coordinate it receive from sms ....

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