One plus one is the app designed to provide some of the necessary resources to improve math skills, including arithmetic, geometry, and statistics, as well as algebra, trigonometry, and calculus.

In this app, you'll find millions of math exercises across hundreds of topics. Each exercise is completely randomly generated.

You can set up to 10 attempts per exercise, allowing up to three users per device to work independently.

You'll receive immediate feedback for each attempt so you can restructure your metacognitive strategies in real time.