Two Existing/published apps(Android & iphone os) need updates;
---Authenticate and approve existing source codes
---Add realtime im chat feature to app for One on One, and group chat use
No user login required(already exist).
No maximum Expected concurrent user
On button click contact list(already exist) pops up
Each User may selects (max 3) from contacts and begins chat
Limit group per a user chat to 3 contacts
Only existing contact from User's phone contact list allowed to join chat
Store/Delete chat history after 90 days
Maximum expected app pages(2) to add for the chat feature
*NOTE: Offer exists competitive bidding. Previous chat work is required.
End project 14 days from acceptance date