Hello Client,
We have developed chat application before, can provide you with strong architecture, fully safe and secure, with each and every feature , a chat application should have. Or else you can let us know, we will add/remove features accordingly.
We are professional developers , working as a team of +150 skilled employees. We are working from past 7 years and have done +540 projects. Please let me know if you have some more features/functionalities to share with us, or else if you have some more specs to share with us ?
You can check our profile and past work, we have earned a lot of reputation on freelancer (https://www.freelancer.com/u/omsoftware.html?)
Our price is flexible, we will provide you best price/time.
Let me know when we can discuss this ahead ?
Looking forward to work with you
Regards
Mukta