Evaluate the time required to charge your rechargeable batteries

Evaluate the time required to charge your rechargeable batteries

Learn how to use a compass for orientation and navigation.

This game will make you smarter.

Learn how to use a compass for orientation and navigation.

Discontinued. Please install the new app from here:https://play.google.com/store/apps/details?id=com.espengineer.quickmathQuick Math is a challenging and addictive math quiz game in whichyou have to rapidly decide whether the basic arithmetic statementsdisplayed on screen are true or false. Besides being a funaddictive game, it will train your brain to do faster mentalcalculations. The basic arithmetic calculations are covered:addition, subtraction, multiplication, and division. At first youhave "plenty" of time to answer the quizzes but the game becomesincreasingly difficult. If you give fast answers, you receive smalltime bonuses for the quizzes to come.

Stopwatch & countdown timer, accurate, professional looking,easy to use.

Stopwatch & countdown timer, accurate, professional looking,easy to use.