MathBlocker · iOS
You burned another hour on TikTok.
Set a daily budget on your distracting apps. When it runs out, they close. Solve a math problem to earn five more minutes.
How it works
Four things, in order.
01
Set a budget.
Pick the apps you want to limit. Set how much time they get each day.
02
Earn time with math.
When you run out, apps close. Solve a problem to earn more minutes. You pick how many minutes per answer.
03
Built on Screen Time.
Uses Apple's Family Controls, ManagedSettings, and DeviceActivity frameworks. Nothing about your usage leaves your device.
04
Question packs.
Problems come from public academic datasets — Hendrycks MATH, MMLU, MMLU-Pro, AGIEval, AQUA-RAT. Download the ones you want.
A note on usage
The app can't see what you use.
Apple's Screen Time framework hides per-app usage from every app that isn't theirs — including this one. The big numbers at the top of the dashboard come from what you earn in the app, not from watching your phone.
The usage chart at the bottom is drawn by a sandboxed Apple extension that can read real numbers, but can't send them back to the main app. You see the chart. I don't.