# Lockademy ロック画面で韓国語 > Learn Korean on your lock screen. From basic Hangeul to TOPIK vocabulary, review your SRS (Study Guide) offline. Canonical page: [https://chrome-stats.com/d/com.hustleup.lockscreen.ko\_ja](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_ja) ## Overview - **ID:** `com.hustleup.lockscreen.ko_ja` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Hustle Up Org - **Category:** EDUCATION - **Version:** 1.1.2 - **Last updated:** 2026-08-12 - **First published:** 2026-08-03 - **Publisher country:** KR - **Size:** 12 MB - **Data as of:** 2026-09-06 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.hustleup.lockscreen.ko_ja) - **Website:** [https://hustlingup.github.io/](https://hustlingup.github.io/) - **Privacy policy:** [https://hustlingup.github.io/lockscreen-korean-privacy/ja.html](https://hustlingup.github.io/lockscreen-korean-privacy/ja.html) ## Description The moment you turn on your screen, it transforms into a Korean language lesson. "Lockademy" displays one Korean word every time you turn on your smartphone screen. There's no need to open an app or set aside study time. The lock screen, which you see dozens of times a day, becomes your learning space.

The sole purpose of this app is to learn Korean on your lock screen. Screens such as word lists, statistics, quizzes, and settings all exist solely to set up and record this lock screen learning.

■ Easy to Use
- When you turn on your screen, a word card will appear.
- Tap to see the meaning, example sentences, synonyms, and antonyms.
- Simply select "I know" or "Repeat." The rest is done by spaced repetition.
- Want to know more? Ask the AI. Google AI mode lets you research nuances, cultural background, and related expressions (regular Google search is used in regions where AI mode is not supported).
- Unlock your phone as usual. It does not interfere with PIN, pattern, or fingerprint authentication in any way.

■ Can't read Hangul? Let's start from scratch!
Still can't read Hangul? The app's built-in Hangul course teaches you the characters themselves. Each vowel and consonant has a mnemonic, and syllable construction is taught step-by-step (ㅎ + ㅏ + ㄴ = 한), final consonants (batchim), and even actual pronunciation rules—for example, 합니다 is pronounced "hamnida," and the reason is explained with a card. If you select "I can't read Hangul yet" when you first launch the app, you'll start from there.

■ Review before you forget!
Leitner's Spaced Repetition System (SRS) redisplays words just as you're about to forget them. Review intervals are 1 hour → 1 day → 3 days → 7 days → 30 days. The interval increases for words you've learned, and returns sooner for words you got wrong. Consecutive learning days and learning records support your motivation.

■ Quiz Mode
Switching the cards to quiz mode presents multiple-choice questions where you guess the meaning of four words. The correct answer is revealed immediately, and there are hint functions and a record of your accuracy rate. In the Korean language course, the quiz content changes, becoming questions where you combine characters to create syllables or match characters to sounds.

■ TOPIK Vocabulary: 20,000 Words
Carefully selected based on the "Korean Language Learning Vocabulary List" from the National Institute of Korean Language and the publicly available TOPIK vocabulary guidelines. Covers all levels from beginner to advanced, from TOPIK Level 1 to Level 6. All words include Romanization, part of speech, natural example sentences, and synonyms/antonyms. You can also view, search, and add words to your favorites.

■ Customize to Your Preferences
• Word Level: Basic Korean Characters/Beginner/Intermediate/All
• Display Frequency: Every Time/Every Hour/Every 3 Hours
• Control your review amount by setting a daily limit on the number of new words. Learning will not end even if you reach the limit.
• Bedtime: Cards will not be displayed at night.
• Alarm Safe: Cards will not be displayed while an alarm is sounding or immediately before it sounds.
• You can hide cards by swiping up from the bottom of the screen, and you can use system gestures such as Samsung Wallet.
• You can set up to two daily reminders. They will be automatically skipped if you have recently studied the word.
• Options for changing font size, turning Romanization on/off, and always displaying meaning.

■ Privacy and Full Offline Operation
All features work offline. No account registration is required. Learning data will never leave your device.

*This app uses the "Show on top of other apps" permission only to display learning cards when the screen is on. It does not cover other apps or weaken your device's security.

Let's start today. One word each time you turn on the screen. Fighting! ## Rankings - #3,138,748 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.FOREGROUND_SERVICE_SPECIAL_USE` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.gms.permission.AD_ID` - `com.hustleup.lockscreen.ko_ja.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Lockademy Корейский локскрин](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_ru) - [Lockademy: Lock Screen Korean](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_en) — 29 users - [Lockademy: Korea Lockscreen](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_de) — 2 users - [Lockademy 锁屏学韩语单词](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_zhcn) — 1 users - [Lockademy: Korea Layar Kunci](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_id) - [Lockademy 鎖屏學韓語單字](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_zhtw) - [Lockademy Coreano al Bloquear](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_es) — 1 users - [Lockademy Koreano Lock Screen](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_fil) - [Lockademy: Korea Skrin Kunci](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_ms) — 2 users - [Lockademy: Coréen écran bloqué](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_fr) - [Lockademy Түгжээ дээр Солонгос](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_mn) - [Lockademy: लक स्क्रिन कोरियाली](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_ne) --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.hustleup.lockscreen.ko_ja)