Must-have App threads for iOS/Android/Mango

[pm]

I'm going to attempt to find all of the must-have app threads that we have for all the mobile OS's and list them out here for easy access.

I posted these as I found them in chronological order - so the order is from recent to old - and went back to about March of 2011.

If anyone has any suggestions of threads that should be added to the list, please send a private message to myself or TheStu. I couldn't find a good Blackberry App thread.

Android:
Recommended games for Android? (Nov. 2012)
Good games for android?
Your "Must-Have" Apps for Android
New Galaxy S II owner here - what are some "must have" apps & other recommendations?
what's some good android apps you guys use??
Your must-have apps when I get my android phone?

iPhone/iPad:
Must have IPhone apps?
Just bought a white 16gb 3GS. Recommend me some apps!
Best iPad 2 apps/games
Your favorite free iPhone apps...

Mango:
Essential Mango apps