Sum's Line app for iPhone and iPad

Sums Line is a very popular minimalist math puzzle game.
It is time to train your brain with your math skill and imagination on some new math and logic puzzles!
You can connect 2 or more digits to add them to the target total value. Connect as accurately as possible for a limited time.
The more numbers, the greater the difficulty, but as long as you stay focused and clear logical thinking, all the difficulties will be solved.
Enjoy!

The rules are simple:
1. Connect tiles so that the their sums match one of the goal values (e.g. 9 = 4 + 5, 10 = 12 - 2).
2. Round tiles can be used more then once.
3. Some levels also require that all cells in the grid must be filled.