IM-Ku Mobile Chat App Targeting Mid-Low Users
Another interesting feature that IM-Ku have, is they uses your phone number as a unique ID for user recognition, this makes it easier for people to invite friends directly from their Phonebook by sending the download URL via text messages. This rather "conventional" method of making the app goes viral can actually gain traction among Indonesian user since most of them are still hooked-up via text messaging which also explains why Blackberry Messenger is very popular.
IM-Ku is available for so many different devices such as Elzio, HT Mobile, Ivio, KTouch, Lexus, Nokia, Skybee Mobile, Blackberry, SPC Mobile, Taxco, Vitell, XP Mobile and also Java-powered mobile phones. Based on these devices supported we can assume that IM-Ku is actually targeting mid-lower mobile phone users, probably on rural areas which is a good target since they're pretty active using their mobile phones but barely touched by big mobile players such as iPhones and Androids.
You can download the app via their website http://get.im-ku.com/ or by typing IMKU and send it via text message to 9800 (local numbers only).