KanjiLock: App Blocker & Focus
Beat Screen Time, Learn Kanji
About
Transform screen time into Japanese learning. This app locks distracting applications, requiring kanji practice to regain access. Engage with interactive exercises like drawing, reading, and recalling characters to master Japanese.
What's New in KanjiLock
1.4
July 1, 2026
We polished the screen you see most: when a locked app tries to pull you away, KanjiLock now greets you with a cleaner, redesigned lock screen and a clearer prompt to get back to practice. We also sped up onboarding and made a few under-the-hood improvements. Thanks for studying with us!
MoreSubscriptions & In-App Purchases
Annual
Annual subscription
Developer apps
FAQ
How does KanjiLock help me learn Japanese?
KanjiLock locks your most distracting apps. To unlock them, you must complete short kanji practice sessions, turning wasted screen time into active learning.
What practice methods does KanjiLock offer?
KanjiLock offers three interactive practice methods: drawing kanji with on-device stroke recognition, matching kanji to romaji readings, and recalling kanji from their English meanings.
Does KanjiLock use spaced repetition?
Yes, KanjiLock utilizes modern FSRS spaced repetition to schedule reviews automatically, aiming for a 90% retention target and eliminating the need for manual deck management.
How is the kanji content organized in KanjiLock?
KanjiLock includes all 2,136 Joyo Kanji, sorted by JLPT level (N5-N1) and available in 10 theme packs. You can also build your own custom packs.
Can I see kanji on my lock screen with KanjiLock?
Yes, KanjiLock features a 'Kanji of the Hour' that displays a fresh kanji with its reading and meaning on your Home and Lock Screens every hour.
What are the subscription options for KanjiLock?
KanjiLock offers monthly and annual subscription plans. The annual plan has two pricing options, one of which includes a 7-day free trial.
Does KanjiLock have ads?
Yes, KanjiLock contains advertisements. As a free app with in-app purchases, ads are part of the user experience.
What devices is KanjiLock available on?
KanjiLock is available on iPhone and iPad devices, supporting iOS.
