If you can't use the app, I wouldn't recommend it. I'd rather get a Tamagotchi P's. This one's fun even if you don't have an infrared device, due to the different pins you can attach to it that contain games and stuff.
If I remember correctly the maximum amount is 2012 Gotchi Points :)
I translated the file names into English as well. Didn't really like the bilingual menu ;)
It's a quick reaction game. Press the A button when Kuchipatchi picks a purple mushroom, and B when he picks a red one.