3 stars: Works half the time. I got the Stealth core apparatus, so obviously this app is necessary, but half the time when I open it I just get a blank white screen, or one of the games won't load. Also, of the four free games, only a couple are fun, so my desire to get the ab workout in is lessened. I'll increase my rating if the app starts working better.
3 stars: The games are OK when it works. I get on for 3 or 4 days. Then I get an all white screen for a week or 2. It quickly flashes downloading but doesn't do anything. I didn't even catch the really small downloading font . If it works for you then you will enjoy it.
4 stars: I'm not a gamer by any means, but this product does give you a great core workout, as well as back and arms. I would have rated it a 5, but it has an issue causing some Android users to have to a problem due to WiFi...they say they are working on it. Still, I have recommended it to others...
3 stars: great and fun way to work out your core! Make more games!!! Make something like Mario Kart where you can race against a friend maybe even on a television or have the phone somehow link to your friend's phone. EDIT: even more fun now that there's a new game monthly! Still waiting on multiplayer racing but in the meantime this is awesome! Update: won't load, white screen of death currently
3 stars: It's frustrating to get three minutes into a game and a lock screen pop up that I need to swipe away. I don't know if they put it up to encour...