The PLUS version https://market.android.com/details?id=appinventor.ai_snowfreeze.TipEstimatorV2_5
Eliminated the programmers name & will add spaces after the periods (.) in the results for a better look & feel. Plus version also allows splitting the bill between multiple parties, includes better look/feel/battery life. Removed bulky DRMs. Enjoy!
Please let us know what you think and if you have ideas for improvements! firstname.lastname@example.org
Thanks and have a great night!