Hi, I would provide you the complete system required by you that is ANDROID APP and back end system IN PHP/MYSQL .
You shall provide hosting/database, custom graphics/design(if you need )for this app development.
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 android apps like reminder, fitness app which suggests diet, pedometer etc , location based hiring app, Local doctor search based up on location, BIDDING app.
I have very strong experience working with gps, location api and other complex features.
I will be able to give you an awesome product.
I will handle Your project effectively and easily.
I have strong working experience on android starting from basic to complex systems like payment gateway like paypal and payumoney , integrating free chat feature to integrating premiere chat sdk like sendbird and applozic integration etc etc. You will get clear and transparent communication with me.
I will give You a completely professional product.
I hope we would be working together soon.