Really it's a very good game, very well made, the usability and the interface are perfect, i don't think it could be better. Thanks

The game is so addictive for me. One of the impressive feature is the generation of the game that I could play forever. I wish that the game generation is faster!

Very very good made! This game generates schemes you can play; Is able to auto-solve schemes you input; and permits you to edit a scheme by yourself! All in one. also can show hints, wrong sums, single sum combinations, etc.

An echo of the prior review. A fabulous program, unlimited puzzles. Great touchscreen usage.

Superb little game... Very comfortable User-Interface...