XD designs of 6 screens done. you need to build the complete android project.
1. Random audio calling to the available user on Firebase database
2. after initial login the user details will be on Firebase database
3. user can click "Start Call", then through webRTC the calling will be made to the available user on firebase database. Its like a loop. If remoter user cant be connected then will try the next available user to get connected. simple
4. credit system will be there. User will use their credit to buy calling minutes. every calling time will be stored on database with user id. and if user finish there credit times then they need to buy credit. calling time will be handled.
5. You need to guide me about using the webRTC and its hosting module if necessary.
5. clean code with comments on top of every functions and methods.
super, simple application. need to be done by 3 days. and please bid amount what you can. I dont want negotiation and offer after seeing your bid. So, bid as I mention.