iOS App - Make Existing App Work

We have a device called Realtag BLE sensor. This has come from Aliexpress.com. Link to same is: [login to view URL] About this device: The RealTag is a low power chip CC2540/CC2541 based on Bluetooth chip for control panel design. It is sensitive to small, low power, very suitable for the volume, weight and other occasions with high requirements, especially in wearable devices. It has a 6 axis motion sensor which gives some readings. Background: It comes with an iOS program which has the code connect to the device and extract the readings. The program can be found @ [login to view URL] Project: The iOS program that has come with it is not working. It is not able to connect to the sensor. However, we are able to connect to the sensor and take out readings through iOS app called LightBlue. Link to the app that is working is: [login to view URL] The project is supposed to: 1. Make changes to existing iOS program so that it works with this sensor. 2. Make me understand the iOS program and set up the environment on my laptop to make further changes on same. 3. Make some minor changes to the program like changing the images, extracting few additional parameters, etc.