FlashLang vs Lock&Learn Korean
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
FlashLang
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FlashLang is a simple yet powerful flashcards app for learning foreign words. Create your own sets, train every day, track progress, and reinforce what you've learned. FlashLang features: โข Mark words as "learned" โข Restart training anytime โข Word search โข Dark mode support โข All data stored locally (UserDefaults) FlashLang is perfect for: โข Students and learners โข Travelers โข Anyone who wants to learn a language fast and stress-free Download FlashLang and start memorizing words today!
Lock&Learn Korean
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Walk into the TOPIK already knowing every word on it. Lock&Learn Korean puts real TOPIK vocabulary on your Lock Screen and Home Screen widgets, the screens you already check a hundred times a day. Each word arrives in hangul with its romanization, meaning, and an example sentence you would actually say, so the language settles in through your day instead of in one long sitting. No account. No streak anxiety. Just the language, arriving quietly. HOW IT WORKS - Add the widget to your Lock Screen or Home Screen - A new word appears each time you glance, rotating throughout your day - Tap any word for the full entry: hangul, romanization, meaning, and an example sentence with its translation - Move through the levels at your own pace IN YOUR LANGUAGE The app comes in English, Dutch, German, French, Spanish, Italian, Indonesian and Vietnamese. Every word's meaning and example sentence shows in the language you pick, and you can switch any time in Settings. THE FEED Open the app and keep going: the Learn tab is your deck as a full-screen feed, one card at a time. Tap to flip a card, swipe up for the next word, swipe left to save it, swipe right when you already know it. Every example sentence carries its romanization word by word, right above the hangul. The scroll you reach for anyway, made of vocabulary. QUIZ The Quiz tab deals your words back to back. Word rounds ask what a word means. Sentence rounds blank the word out of a real sentence. Listening rounds ask by ear: nothing to read, just the word spoken aloud. Getting one wrong never affects your progress. Choose whether rounds draw from the words you have met or your whole deck, and set each kind's clock, in Settings. A QUIZ ON YOUR WIDGET, TOO Prefer a challenge before you even unlock? Flip the widget to a question. It shows you the word and asks what it means, then reveals the answer with one tap. A tiny test every time you check your phone. YOUR OWN LISTS Every word carries a save button. Tap it to keep the word, hold it to file the word into a list of your own: travel words, exam words, the ones that keep slipping away. Your lists live in the Library, ready before your trip is. YOUR PROGRESS A Progress screen in the Library counts the words you know and the words you have met, keeps your streaks, and fills one bar per level as you climb. A quiet answer to how it is going, with no dashboard in sight. BUILT ON TOPIK VOCABULARY The word list follows the TOPIK levels, the standard framework for learning Korean, from your very first words up through the vocabulary of dramas, news and the workplace. Level 1 is free forever, the whole first level, no trial and no catch. When you are ready for more, Lock&Learn Korean+ opens every level. MADE TO BE CALM - Notifications are off by default and always opt-in - Your progress stays on your device, no account needed - Save words with a tap, or file them into custom lists of your own - A calm, paper-like design that reads beautifully in light and dark Lock your phone. Learn Korean anyway. Lock&Learn Korean+ is available as a yearly subscription with a 3-day free trial, a monthly subscription, or a one-time lifetime purchase. Payment is charged to your Apple Account. A subscription renews automatically unless canceled at least 24 hours before the end of the current period; manage or cancel it any time in your Apple Account settings. Terms of Use: https://locklearn.co/terms.html Privacy Policy: https://locklearn.co/privacy.html
Screenshots
Verdict
The clearest difference is in-app purchases: FlashLang at none against Lock&Learn Korean's 4. FlashLang also leads on iOS requirement (18.0 vs 26.5). Lock&Learn Korean's advantage is update cadence (every 3 days vs every 8 months). On price, ads and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Lock&Learn Korean sells 4 in-app purchases, starting at $5.99 per month. FlashLang asks for nothing beyond the download.
FlashLang ships an update every 8 months, Lock&Learn Korean every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | FlashLang | Lock&Learn Korean |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 months | Every 3 days โ better |
| Ads | No | No |
| In-app purchases | No โ better | Yes |
| Devices | iPhone | iPhone |
| Requires iOS | 18.0 โ better | 26.5 |
| Further details โ not scored | ||
| Size | 1 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Jurijs Cernovs | Jeroen Meij |
In-app purchases
FlashLang
No in-app purchases
Lock&Learn Korean
- Monthly$5.991 Month
- Yearly (welcome offer)1 Year trial$14.991 Year
- Yearly3 Days trial$14.991 Year
- Lifetime Unlock$34.99









