I was a heavy user of the website and quite happy with it as a complementary tool. It did what no other resource did : Have me have a go at it every day ad remobilize knowledge. Grammar lessons and concepts are otherwise easily found online. In tandem, it worked wonders.

In my opinion, the tool only makes sense if you have a keyboard. Just choosing the right words on an app does not work well to remobilize knowledge. I learned typing just to be able to do my daily exercises faster.

The overgamification is also a pain. The only that ever mattered was your streak.