Sorry, this article is only in Japanese.
For those who don’t know Enfani’s first iPhone app “SUM!”, it’s a very fun math game that teaches the concept of addition through play. Drag a number monster to another and you’ll get a bigger one. When you make a 10, it disappears. So try to make 10s as fast as you can before the bubbles fill the screen.
Mistake? That’s OK. Just double-tap a ball and it will break down again into smaller ones.
SUM! has been very popular since its release last year. It often appears in the top page of the AppStore as a featured app.
And here’s some good news! SUM! is now on sale and you can get it for free! Oh and of course as the title says, the app will have a huge update soon. I can’t say it yet, but something very exciting will happen in the app!