Greetings !!
This is Debanjan, in-charge of the Business Development activities of Steema Software Pvt. Ltd. : Kolkata, India
Yes, we have our technical resource pool in synergy with your particular requirement. We can surely develop an application similar to whatsapp, but, in that case both time-frame and pricing will be much more higher.
Kindly revert back to our application, with a detailed job specification. Right now, I am putting a tentative (not final), time-frame and pricing.
You can add me on S K Y P E, my ID ; Devanjan Dutt ; so that we can have a detailed con-call involving our technical expert.
Awaiting kind acknowledgement from your end.
Thanks a lot !!