I finally built Mathy, a little project I’ve been thinking about for a couple years. It’s free, and no account is required if you want to try it on iOS or web .

I use Math Academy daily, which is the best way to learn math. But I wanted a mobile-friendly way to drill math and weak areas on the go that was more convenient/less cumbersome than Anki cards.

It’s also a nice way to do something productive (feel like I’m building towards something) in those spare moments here and there rather than scrolling.

The gist of Mathy is counterintuitive: If it works, you’ll use it less.…