The puzzles are somewhat fun and I like the thought of keeping my brain nimble. However the app has glitches. First screen ask if you want to start with sound. Yes or no doesnt matter as it has yet to make a single beep. I did check both of my devices and the sound is on. Also, when I do my daily brain training, it will ask if I wish to continue after each exercise. Most of the time if I say "Yes" the app dies and then I have to tap thru 5 screens to get back to where I was. Easier to say no and then go back in. Also, the instructions on a few of the games are a bit sparse. If possible play them in practice a few times to get the hang of them. Finally, they have icons and ratings but no place you can go to learn what they mean. My E is a blob and my H is something else. I have no idea what E and H stand for but a few of the shapes you can learn as the games tells you how you did. A chart would be helpful.
ksattler about Brain Exercise with Dr. Kawashima, v1.0.1