Tsumego

★★★★★ I like that it incorporates a spaced repetition system and overall this app and their tsumego app have helped my game so far. However, I think the time on the spaced repetition should be based on how easy the problem was for me-- if I answer a problem correctly the first time I see it but it takes me longer for me to read it out than I would give myself in a game, I should be able to rate the answer I gave as difficult to me and see it sooner than in three months. As such I have resorted to intentionally answering questions incorrectly to 'fix' the timing. There should also either be a way to suspend or remove problems from each set, or to edit problems. The problem in the first set that annoys me the most is one where you can either falsify one of white's eyes, or capture white in a snapback. The snapback is counted as "incorrect" even though there is no real refutation, and it is always the first answer I see, and furthermore if only one stone were different the snapback would not be possible making this dilema moot. I would also like a way to save my progress between devices, or, considering all of these annoyances, to port the problems to my dedicated flashcard app, Anki. I lost all of my progress in these go problems when I got a new phone.

★★★★★ Good idea, needs some work This is overall a well made app. Unlike other go problem apps, this one doesn't play responses for you. You need to play the entire variation, both white and black. This is better for reading. The main problem is that it counts a lot of right variations as wrong. Either when there are two right moves for black, or several equally-wrong moves for white, only one variation is programmed in as correct. After a while you just have to memorize the program's favorite variation, which is counterproductive.

★★☆☆☆ Love this app but it became close to unusable after the behavior of ads changed. Ads are now appearing a short time after a problem loads, and when they pop up they hide part of the board! So if the tsumego is on the bottom of the board I can't solve it because it is hidden by the ad. I have to go back to the menu then go back into the problem, and hope that it will be on top of the board (1/4 of the time) so that I can solve it. Please fix this issue!