I also really enjoy the "Magnus Trainer" app: https://apps.apple.com/us/app/magnus-trainer-train-chess/id1097863089 https://apps.apple.com/us/app/magnus-traine

I also really enjoy the "Magnus Trainer" app: https://apps.apple.com/us/app/magnus-trainer-train-chess/id1097863089 https://apps.apple.com/us/app/magnus-trainer-train-chess/id1...