Pythago app for iPhone and iPad

Pythagö is a Pythagorean Theorem Mastery App.

You may register and log in so that your scores will be automatically saved to our online database. Teachers can see their students results.
When you are offline your results will automatically be saved to your device.
There are 10 Levels:
Level 1: find the hypotenuse given the other two legs.
Level 2: find a leg given the hypotenuse and the other leg.
Level 3: find a missing side.
Level 4: find the perimeter given two sides.
Level 5: calculate the area of the right angled triangle.
On levels 1 to five, all of the sides of the right angled triangles are whole numbers.
On levels 6 to 10, all of the sides are rational numbers (decimals). So you need to work with decimals. Your answers should be rounded to four or five decimal places.
Level 6: find the hypotenuse given the other two legs.
Level 7: find a leg given the hypotenuse and the other leg.
Level 8: find a missing side.
Level 9: find the perimeter given two sides.
Level 10: calculate the area of the right angled triangle.