Feature · Active tier · Reviewed 2026-05-13

# The Pushup Lock

When a fine lands, target apps stay locked until you complete a verified redemption. 25 pushups counted by the iPhone TrueDepth camera, 1,000 HealthKit steps, or 10 mindful minutes. You pick the redemption type during onboarding. The block is real. The exit is yours.

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What's included

- Camera-verified pushup counter (iPhone TrueDepth)
- HealthKit step alternative (1,000 steps)
- 10 mindful minutes timer redemption
- Single redemption type set at onboarding
- On-device frame processing, no video stored

## Why verification matters

A timer-only redemption is an honor system. Honor systems fail the same person twice in a row because the cost of cheating is zero. ScreenFine verifies. The iPhone TrueDepth front camera counts pushup reps using a depth-tracked rep counter that watches your chest distance to the lens. Gym-style cheat moves (head bobs, half reps) do not pass. Step counts come from HealthKit, which the phone has been quietly logging all day. Mindful minutes are timer-only by design, but the trade-off is a longer redemption (10 minutes vs. ~90 seconds for 25 pushups), so the friction is comparable.

## What unlocks the apps

You pick one redemption type during onboarding and it applies to every fine. 25 pushups is the default because it is short, physical, and verifiable. 1,000 steps is the alternative for users who cannot do floor exercises. 10 mindful minutes is for users who prefer breath work or have a quiet space. The redemption is the same across every fine, so the contract is predictable: cross your limit, do the reps, unlock. No menus, no decisions in the moment.

## Camera privacy

The pushup counter runs entirely on-device. Frames from the TrueDepth camera are processed by the ARKit body-tracking framework, used only to increment a rep counter, and discarded. No video is recorded, stored, or transmitted. The camera permission is required only because ARKit needs it. You can switch to HealthKit steps or mindful minutes at any time if you prefer not to grant camera access.

Goes with

## Related features

[Active tier ### The Fine Jar The fine jar is the engine behind ScreenFine. Every 15 minutes you go over your daily screen-time limit, a lock event lands in the jar. Target apps stay locked until you complete 25 verified pushups, 1,000 steps, or 10 mindful minutes. The "fine" is real, just not financial. ->](/features/fine-jar/)[Active tier ### AI Villain Every fine ScreenFine creates fires a personalised roast notification from one of six AI villains. The roast cites the app, the minutes, and the running cost. It is not generic. It is yours. ->](/features/ai-villain/)

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