Comparison

Lzy Learn Korean vs OptimalChinese

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Lzy Learn Korean

Features
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Lzy Learn Korean helps you learn Korean in a fun, structured, and beginner-friendly way. Whether you love K-dramas, enjoy K-pop, are planning a trip to Seoul, or are starting from zero, you can build real Korean skills step by step. Learn Hangul, grow your vocabulary, understand grammar, improve pronunciation, and practice speaking, listening, reading, and writing in one app. Chat with AI Korean tutors, follow guided daily lessons, and learn through interactive stories, manga-style content, quizzes, and spaced repetition review. Features: • Learn Hangul with interactive lessons and native audio • Practice with AI Korean tutors through voice chat • Study vocabulary with spaced repetition flashcards • Build grammar through guided lessons and exercises • Improve listening with dictation and audio activities • Practice writing with guided exercises and AI feedback • Read mini stories and manga-style lessons with tap-to-translate • Train pronunciation with guided sound practice • Follow daily Korean study sessions based on your progress • Track streaks, XP, achievements, and saved words Premium: • More AI voice chat minutes • AI-generated quizzes • Free writing with AI feedback • 3-day free trial Start learning Korean with Lzy Learn Korean today. Terms: https://www.ulbmedia.com/terms/lzy-learn-korean Privacy: https://www.ulbmedia.com/privacy/lzy-learn-korean

About

OptimalChinese

Features
Read full description

Every sentence you study is built from the words you already know, plus exactly one new notion. That is the whole idea: nothing you read is above your level, so you understand it the first time — and you remember it. EVERY SENTENCE IS ONE STEP UP When a new word or rule comes up, the example around it is assembled from vocabulary you have already learned. One unknown per sentence, never five. NEVER FORGET Every word and every rule is scheduled with FSRS-6, the modern spaced-repetition algorithm, and comes back at the last useful moment — so a notion learned once is not learned three times. NEVER CONFUSE Look anything up and see how it is built: the characters a word is made of, the words it combines into, its measure words, and the siblings that are easy to mix up. Link two confusable entries and they are taught apart. FOR EACH ASPECT Reading, listening and writing are different skills, so each gets its own card and its own schedule. A word you can read but not hear keeps coming back in your ears until you can. CUSTOMIZE YOUR PATH Follow HSK 1–5 lesson by lesson, or pick from hundreds of themes and learn the vocabulary of what you actually talk about. Tell the app where you are and it plans the rest. IMPORT WHAT YOU ALREADY HAVE Bring in an Anki deck or a Pleco export, or start from your HSK level in one screen. What you already know is merged with what the app teaches, instead of starting you from zero. YOUR CLASSES, IN THE APP Share a private space with your teacher. Anything either of you saves during a lesson — a word, a phrase, a correction — is waiting in your reviews afterwards. AN AI TUTOR THAT KNOWS YOUR LEVEL Ask why a sentence works the way it does, and get an answer written for the vocabulary you actually have. ALSO • Native audio on every word, sentence and example • Dictation using your iPhone's own speech recognition • A dictionary that searches on the device, instantly • Your own cards and phrases, alongside the built-in ones • Dark mode, haptics, and a layout made for one hand SUBSCRIPTION OptimalChinese Pro unlocks everything: $12.99 per month or $79.99 per year, after a 7-day free trial. Payment is charged to your Apple Account when the free trial ends, and the subscription renews automatically unless it is turned off at least 24 hours before the end of the current period. Manage or cancel it in your Apple Account settings. Terms of Use: https://www.optimalchinese.com/terms Privacy Policy: https://www.optimalchinese.com/privacy

Screenshots

Lzy Learn Korean4 screens
OptimalChinese4 screens

Verdict

The call

Lzy Learn Korean and OptimalChinese are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price Ā· Rating Ā· Positive reviews Ā· Number of ratings Ā· Update frequency Ā· Ads Ā· In-app purchases Ā· Monetization Ā· Best chart rank Ā· Devices Ā· Requires iOS

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Lzy Learn Korean sells 1 in-app purchase, starting at $14.99 per month and OptimalChinese sells 2 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
Lzy Learn Korean versus OptimalChinese: the parameters behind the verdict, then further details
ParameterLzy Learn KoreanOptimalChinese
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.115.0 — better
Further details — not scored
Size175 MB12 MB
Age rating4+12+
DeveloperRuwaida FosterLucas Costagliola

In-app purchases

1 purchases

Lzy Learn Korean

Subscriptions1
  • Lzy Learn Korean Premium3 Days trial$14.991 Month
2 purchases

OptimalChinese

Subscriptions2
  • Monthly7 Days trial$12.991 Month
  • Yearly7 Days trial$79.991 Year

Questions

Is Lzy Learn Korean free?
Lzy Learn Korean is free to download, with in-app purchases available.
Is OptimalChinese free?
OptimalChinese is free to download, with in-app purchases available.
Do Lzy Learn Korean or OptimalChinese have ads?
Neither Lzy Learn Korean nor OptimalChinese shows ads.

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