I can't remember the last time I wrote an App Store review. But I have to for this app. Built in engine, % seen in GM games, names for variations 7+ moves in. The free options are fantastic, and i went to pro strictly to support the devs as I have my entire (limited) repertoire in and only use 50%. If you have any experience with file management, then the structures of how to arrange your openings help determine the built in spaced repetition. If you have one major line you wanna flush out with several variations, add that and practice. If you have several 5-7 move deep shorter openings (common for low elo like myself) it's easy to set those up and get more familiar with all of them after two weeks and not even realize it. The only "effort," I put in was tapping through the suggested responses with what I see in my games. Now the platform offers me spaced learning, games with similar tactics, and common variations to continue a line once I'm familiar. AND THEY HAVE A WEB PLATFORM FOR FREE! An amazing app that's already improved my openings greatly with the least amount of work put into having it be useful. 6/5 new standard

This app is literally the answer to my prayers, and that it is an actually sensible system for learning openings that doesn’t require memorizing extremely complicated if/then chartsThe only issue is that I wish it would pause for a moment after you complete a move sequence so that you can absorb the positionThe instructions could also be a little bit more clear on how to get started because I didn’t realize how great it is until I really stuck with it

This app is everything you could ever want from a repertoire book. This is NOT a replacement for books/courses, and NOT for beginners! All in all, a great resource that utilizes spaced repetition for memorization of imputed lines. I only gave 4 stars because of a small gripe. Move descriptions. Very few lines have explanations, and with the ones that do, there are many errors (i.e, a knight move being described as “developing a bishop to the long diagonal”). IMHO, as an app made for advanced players, move descriptions are not strictly necessary. Leave the opening explanations to the countless books, videos, and courses that are already available!

It’s so nice being able to keep all my openings in one place. Seriously it’s made me better already. The daily “homework” is super helpful. The app does make your phone run crazy hot, and some of the move frequencies don’t match the Lichess database they’re pulling from, but it offers quick access to Lichess analysis so it’s not that bad. I have noticed some inconsistencies with the engine analysis too. Sometimes the best move is labeled as a mistake. Often the analysis is overinflated in the app, and much tamer when you go to the Lichess analysis (eg. app says +3.7 when the analysis board gives +1.8). Sometimes the best move is missing from the suggested moves. What would be cool is to get numbers of games/percentages as well as the 1 in x number of games.Still, it’s a great start and I’m looking forward to updates in the future! Only see good things for this app.