Turn every screen activation into a Korean lesson. Lockademy shows you a Korean word every time you turn on your phone: read it, remember it, and go about your day. No need to open any apps or find time to study: the moments you already glance at your phone become dozens of micro-lessons a day.
The sole purpose of this app is to learn Korean on your lock screen. The other screens—word list, statistics, quiz, and settings—exist only to configure and track your lock screen learning.
HOW IT WORKS
• Turn on your screen and a card with a Korean word appears.
• Tap to see the meaning, an example sentence, synonyms, and antonyms.
• Tap "I know it" or "See it again"; smart repetition does the rest.
• Want to learn more? Tap "Ask AI" to explore the word in Google's AI mode: nuances, cultural context, and related expressions (normal Google search where AI mode isn't available).
• Unlock as usual: the card never locks your PIN, pattern, or fingerprint.
NEVER READ HANGUL? START FROM SCRATCH
Still can't read Korean? 한글's built-in course teaches you the alphabet itself: each vowel and consonant with a mnemonic and audio, step-by-step syllable construction (ㅎ + ㅏ + ㄴ = 한), ending batchim, and the actual pronunciation rules—합니다 is pronounced "hamnida," and flashcards show you why. Choose "I still can't read Hangul" the first time you open the app, and you'll start right there.
SMART REVIEW THAT NEVER FORGETS
Leitner Spaced Repetition (SRS) brings each word back just before you forget it: 1 hour → 1 day → 3 days → 7 days → 30 days. The words you master are spaced out; the ones you miss come back sooner. Your daily streak and stats keep you motivated.
QUIZ MODE
Switch the card to Quiz mode and choose the correct meaning from four options. Instant feedback, hints, and percentage of correct answers help you improve. In the Korean course, the quiz practices letters: form syllables from their parts and match each letter with its sound.
20,000 TOPIK WORDS
Vocabulary selected from the official list of the National Institute of Korean Language and the TOPIK public vocabulary guides, from beginner to advanced levels (TOPIK 1–6). Each word includes romanization, grammatical category, a natural example sentence, and synonyms/antonyms. Explore the full list, search, and save your favorites.
MAKE IT YOURS
• Word levels: Korean alphabet basics, beginner, intermediate, or all
• Frequency: Every time you turn it on, every hour, or every 3 hours
• Daily limit on new words to keep reviewing manageable—and reaching it never ends your session
• Quiet hours: No cards at night
• Alarm-proof: The card moves away while your alarm is ringing or about to ring
• Tap the clock on the lock screen to hear the time and date in Korean
• Swipe up from the bottom edge to hide the card—this is how system gestures like Samsung Wallet work
• Two daily reminders that are skipped if you've already studied
• Font size, romanization, and the option to always show the meaning
PRIVATE & 100% OFFLINE
Everything works without internet. No account, no registration, and your study data never leaves your phone.
Note: The app only requests "Show over other apps" permission to display the study card when you turn on the screen. It never covers other apps or weakens your device's security.
Start today: one word each time you look at your phone. Let's begin!
Learn Korean on your lock screen: from Hangul to vocabulary TOPIK, SRS offline.