4 stars: It's a great app but I wish they consolidate their apps into a smaller collection and also make their UI more intuitive
4 stars: Fun and instructive. Good option for those who want to keep sharp their game but don't have enough time to play full games
3 stars: This app presents a series of problems the user is supposed to figure out. It does that well enough. The problem is there is no instruction at all, so the app tells you when you make an incorrect move, but it does not say why the move is incorrect. Sometimes the error is obvious, but often enough I have no idea what I was supposed to do. In the end, not very helpful.
3 stars: It is very good in challenges but does not teach openings the way to make them be second nature.
2 stars: Very bad design. No explanation to the lines thrown at you. No undo move button until solved. Sometimes the puzzle autocompletes itself not letting you play. No restart button, you gotta move between puzzles to reset it. If you click a wrong button and switch the puzzle your progres is lost. Some puzzles are very good but the app itself is terrible. 2 stars thanks to the night mode.
2 stars: A-The + points : - We are going from one equation to the other -We can get helped B- The - points : - You get
...