The game doesn't work with OS 9.1 AT ALL. My little guy really enjoys Sound Touch Lite, so I decided to buy Sound Touch 2 because I really liked the categories offered. The first time, the game worked fine except without sound. I chose the sound option in Settings, and assumed that would fix things. Wrong! Now every time I attempt to open it, ST 2 randomly chooses a category and an item within that category to open. When I try to close the randomly selected item, the app closes down immediately.
The only good thing is I hadn't told my child about the app, only to disappoint him with it's extremely poor performance.
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