http://www.any.do/ is a great little "To Do" app which I use on Android (It's available for iPhone, Chrome and Web to, however I haven't tested the offer on other platforms).
Download the app https://play.google.com/store/apps/details?id=com.anydo (I used play store), register and create a couple of "to do" items. Now mark those items off as "complete".
You will now be congratulated on completing your tasks and emailed a $5 credit for the Amazon App store. No other strings.
Whole process should be <5 mins.
With the $5 you just made, you can now buy more apps to distract you from the rest of your to do list.
Enjoy!
I was already using this app. So I uninstalled and installed it again to get the promotion. very easy and got the code.
credit must be redeemed and used by august 24th .