958 words. Illustrated flashcards. Three vocab games. Spaced repetition. And the only app that turns your phone against your worst habits.
Start Your Free TrialPrepLockin uses Apple’s official Screen Time API to block any app you choose. When you try to open it, a vocab quiz appears instead. Answer 5 questions. 90 seconds. Then scroll guilt-free.
Words rotate on your lock screen, home screen, and StandBy widget. You just glance at your phone — which you already do 96 times a day.
Pick the apps that steal your time. PrepLockin blocks them with Apple’s Screen Time API. A 5-question vocab quiz appears instead. 90 seconds and you’re free. Every unlock = 5 more words learned.
Three games encode each word three different ways. Match Madness, Word Scramble, Context Detective. Studying that feels like playing.
Every word has a custom illustration. Visual + verbal = 65% better recall.
10 words at a time. Master 8 to unlock the next wave.
Block Instagram, TikTok, Reddit — any app. A 5-question vocab quiz replaces the app until you pass. Uses Apple’s official Screen Time API. Your data never leaves your device.
Lock screen, home screen, StandBy. Words rotate every 30 minutes.
Leitner system decides what you see and when. 3 correct = mastered.
Daily streak counter + GitHub-style activity heatmap. Don’t break the chain.
7 days free. Full access. No feature tiers.
No charge until Day 8