Brain Tuner gives you the option of choosing between 20 or 100 simple math problems. The trick is to make sure the problem is correct or incorrect. The program records how long it takes you to get through the list of problems. This gives you an incentive to continue to try and lower your overall time.

Using this application is a no brainer. Simply hit Right if the problem has the correct answer and Wrong if the problem has a wrong answer.

If you have never tried out programs of this type you should definitely give this one a try because of its simplicity. Give it a try and see how fast you can solve the problems! Here is my the lowest time for 20 problems as of today:

Where do I get this App?

This app is available through the Apple App Store for free.
( Requires you to have an iTunes account )