About this app
This app offers a one-time in-app purchase ($9.99) that unlocks repair drills, Score Leak Map, Desmos Lab, and progress tracking. The diagnostic (45 questions) and error pattern report are fully available without purchase. To test the purchase flow in sandbox, use any sandbox Apple ID. The StoreKit product ID is "com.jtscientific.MathErrorLift.premium". No login, account creation, or personal data is required or collected. All data is stored locally via SwiftData. SAT is a trademark of the College Board. All question content is original and not sourced from College Board materials.
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 15, 2026 · 1:29 PM Free
Screenshots
