QuizLock: Screen Time & Quiz

QuizLock turns the time you lose to scrolling into something you keep.

Choose the apps you lose time in and set a daily limit. When you reach it, QuizLock locks the app and asks a question. Answer it and you are back in. That is the whole idea — the phone does not just say no, it asks for something small in return.

WHAT YOU GET
• Screen-time limits for the apps you choose
• A lock screen with a real question, not a guilt trip
• 84,000+ questions across nine categories, in seven languages
• Vocabulary practice in seven languages
• Questions you get wrong come back on a spaced-repetition schedule
• Practice any time to bank minutes you can spend on a future lock
• Day streaks, with a protection that covers the day you forget
• Per-category accuracy, so you can see what you are actually weak at
• A morning summary and an evening reminder — both optional

YOUR DATA STAYS ON YOUR PHONE
Screen-time measurements, the list of apps you monitor and your quiz history are stored on the device. We have no servers and no accounts. You can export a backup file whenever you like.

IN A HURRY?
Watch a short ad to skip once, or spend minutes you earned by practising. Premium removes ads and adds automatic backup.

QuizLock is a digital wellbeing tool. Usage Access is used only to measure the apps you choose; the display-over-apps permission is used only to show the quiz.

Recent changes:

Three new languages: Arabic, Bengali and Indonesian — with the interface, notifications and questions in all nine categories.
Kids mode: PIN-protected, ad-free, only easy age-appropriate questions.
Thousands of new questions — the bank now exceeds 210,000, and questions repeat far less often.
The vocabulary trainer tops 2,100 words, now with meanings in Arabic, Bengali and Indonesian too.
Premium now takes a promo code.
Fixes to the Premium badge, Drive backup, ads and purchases.