This is a very basic, straight forward and easy to use implementation of the Planning Poker card set which is used within the SCRUM project management strategy.
If you have never heard of SCRUM or Planning Poker I definitely recommend to have a look at Wikipedia.
This application supports APP2SD
Localized for German and English.
This software is free to use even within commercial projects, but please do not blame me if your project runs out of time and budget :-)