It’s tough choosing one, especially since there are so only minor differences between them, that make a HUGE difference. Whatsapp is the undisputed cross-platform mega-beast. It’s easy and automatic contact-fetching can be figured out by any dummy, making it good at the most vital feature of a mobile messenger: universality.
However, it is glitchy and counts mainly on the spiritual world to predict whether or not an IM was sent, delivered and read. Kik is lightning fast, with the BBM s d and r symbols that make it so handy, so does LiveProfile.
Anyway, based on my trials with these apps on my Android Galaxy S and Nokia e7, I’ve drawn up this simple table:
For now, it’s really a race between Whatsapp and Kik. However, I don’t like to choose, for if you settle for whatsapp, you settle for snail-powered chat, though one that all your friends can use. If you stick to kik, you’re gonna lose all your BB slave friends and Sybian Nokia users, but you do get lightning-fast chat capabilities with your iOS and Android buddies. So, download all 4 if you can, like I have on my Android, and keep your options open!
Or, wait till RIM ends it’s silly suspense-game and tells us when it is releasing the BBM for Android and iOS devices!
Update: Kik is back on BB! Read more here. Thanks Sh4do3