Features
Four parts. One job: make going over your limit cost something real, then hand you a way out that isn't your wallet.
Every minute over fills the jar. It's not dollars, it's a debt measured in reps and steps. The jar drains the instant you pay it down. Watch it move and you stop letting it fill.
SEE THE FINE JAR →Camera-verified, counted on-device, stored nowhere. 25 pushups, 1,000 steps, or a logged workout clears the lock. No "I did them, trust me." Your body does the talking.
SEE PUSHUP LOCK →A personalised roast on every fine, in the voice you picked. The more you slip, the meaner it gets. People stay clean just to shut it up, which is exactly the point.
MEET THE VILLAINS →Opt-in. Put your fines next to your friends' and let loss aversion go social. Nobody wants to be top of the leaderboard nobody wants to win.
SEE THE WALL →The science
Most screen-time apps are reminders. They show you a number, send a nudge, or pop a timer you can dismiss, and within a week your brain learns the exact button that makes them disappear. Reminders fail because the moment you decide to keep scrolling is the moment your willpower has already lost. An alert that arrives right then is just one more thing to swipe past.
ScreenFine is a commitment device, not a reminder. You set the limit in a calm moment, and when you cross it the apps you chose are blocked at the operating-system level through Apple's Family Controls, the same framework parents use. There is no "ignore for 15 minutes," because the decision was already made by the version of you that wasn't mid-binge. That is the whole point of a commitment device: it binds your future self to the choice your present self knows is right.
The second half is how you earn your way back in. Instead of a paywall or a countdown, the unlock is verified effort: 25 camera-counted pushups, 1,000 steps, a logged workout, or mindful minutes. A moment of weakness becomes a small win, so the cost of going over is paid by your body, never your wallet and never a hidden charge. Loss aversion does the rest, because people protect a clean streak far harder than they chase a vague goal.
