About this app
Practice addition and subtraction facts with sums and minuends to 20. Or work with "More Than" and "Less Than" sentences. For example: What number is 5 more than 6? What number is 3 less than 7? Use a number line as a tool for solving the problems. Adjust the options to include any combination of Result, Change, or Start as the unknown quantity. Select the facts to practice.
Latest release
What’s New
• Updated to support iOS12 - thank you for your patience. • A few other minor tweaks • As time allows, I'd enjoy hearing how you're using this app in the classroom and at home.
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Aug 12, 2026 · 4:54 PM Free
Screenshots
