Mobile chat app like whatsapp

Job ID: 32877261

Budget: €5,000 – €10,000 EUR

Please see attached file.
1. Design needs to be made according to my examples
2. Mobile app has to be developed with my functions.
App has to work perfectly smoothly especially call / videocall.
There can be no latency or crashes.

Also requires a full performance testing before delivery and performance should be able to handle 1 million users minimum!

Good examples are whatsapp + bip + messenger.

I will ONLY RELEASE FUNDS AFTER FULL WORK IS COMPLETED ACCORDING TO THE DOC!