I have made voip call app months ago and it is live in iTunes now. It has audio/video call, chat function, but in voip server doesn't support file transfer function in chat part. So I think openfire chat is good for chat function and I need a developer who can make this fucntion perfectly. Chat must have following functions: 1. User online status check(online, away and offline) and if user offline, show time from leave. 2. Text message 3. File transfer(photo and video(optional)) 4. emoji 5. group chat(optional or future) I have made several chatting apps before, but I don't know about openfire and xmpp chat. Please apply on this job if you have openfire and xmpp chat experience. This app was developed for iphone and android, so if you work well in iphone version, then we can go on android version. Please tell me fixed price and period of this work. the faster, the better. Looking forward to hearing from you. Ps. please write xmpp word on your first line, so I know you read this.