Hi, I will develop the Android app and back end required for it in php/mysql . You need to provide charges for third party api like chat sdk( if any) , sms gateway , location google api (if you use) or api for live video streaming etc to the respective companies. I have developed many a few android apps like reminder, fitness app which suggests diet, pedometer etc , location based hiring app, Local doctor search based up on location, BIDDING app. So, I have very strong experience working with gps, location api and other complex tasks. I am able to finish Your work at ease. So, I feel I am enough competent for Your project. I will be able to give you an awesome product. I will handle Your project effectively and easily. I have knowledge on android starting from basic to complex systems like payment gateway like paypal and payumoney , chat sdk like sendbird and applozic integration etc etc. You will get honest communication with me. I will give You a completely professional product. So, I hope we would be working together soon.