Comparison

Seonsaengnim vs Lecsium

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

Head to head
About

Seonsaengnim

Master Korean with a structured curriculum, interactive exercises, and personalized feedback. Expand vocabulary, improve pronunciation, and track your progress with a virtual teacher available anytime.

Highlights
  • Structured progressive lessons
  • Interactive exercises
  • Virtual teacher support
  • Vocabulary flashcards
  • Pronunciation practice
  • Progress tracking
  • Integrated dictionary
Read full description

Learn Korean with a complete, structured and motivating method, even if you're starting from zero. Seonsaengnim brings together Korean lessons, the Hangul alphabet, grammar, vocabulary, conjugation, pronunciation and conversation in a single app designed to help you truly progress, from beginner to advanced. A STRUCTURED METHOD IN 10 LEVELS Move forward step by step with over 300 lessons organized into 10 levels. Each step combines clear explanations, useful vocabulary, Korean grammar, examples, exercises, quizzes and reviews. Start by learning to read and write Hangul, then gradually build your understanding and your ability to express yourself. PROF. PARK, YOUR TEACHER AVAILABLE 24/7 Ask Prof. Park your questions in writing, or practice speaking through voice conversations. Work on your Korean pronunciation, ask for an explanation, review a concept or rehearse an everyday situation. Prof. Park adapts every exchange to your level and helps you gain confidence when speaking. A COMPLETE KOREAN DICTIONARY IN ENGLISH AND FRENCH Search for a word in Korean, English or French among more than 120,000 entries. See its different meanings, audio pronunciation, examples in context and grammatical details. For verbs, access around 15,000 conjugation tables with up to 16 forms: present, past, future and different politeness levels. FLASHCARDS THAT ADAPT TO YOUR REVIEWS Memorize vocabulary for the long term with spaced repetition. Create your own folders, find the words you met in lessons and review them at the right time. The app also spots your weak points and gathers your mistakes so you can focus on what really helps you progress. PRACTICE KOREAN IN EVERY FORM โ€ข Hangul handwriting with your finger โ€ข Audio dictations and pronunciation exercises โ€ข Reading texts adapted to your level, with audio, interactive words and quizzes โ€ข Personalized texts to vary your practice โ€ข Conversation simulators based on real-life situations โ€ข Vocabulary battles and challenges with other learners โ€ข Targeted reviews, personal notes and a focus timer STAY MOTIVATED EVERY DAY Build your daily streak, earn XP, track your progress and compare your results on the leaderboard. Unlock cards inspired by Korean mythology and help your study companion grow as you put in the effort. Every session counts, even the short ones. A BILINGUAL, CUSTOMIZABLE APP Use Seonsaengnim in English or French, turn on dark mode and set up study reminders. Your learning path, reviews and tools stay in one place so you can learn at your own pace. WHO IS IT FOR? Whether you're learning Korean to enjoy K-dramas and K-pop without subtitles, prepare a trip or a stay in Korea, study or work in South Korea, or prepare for the TOPIK, Seonsaengnim adapts to your goal. The app is suited both to complete beginners discovering the Korean alphabet and to learners who want to strengthen an intermediate or advanced level. Whether you want to learn the Korean alphabet, understand grammar, conjugate verbs, expand your vocabulary, improve your pronunciation or hold a conversation in Korean, Seonsaengnim is with you every step of the way. Download Seonsaengnim and start learning Korean today. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.seonsaengnim.com/en/legal/privacy

About

Lecsium

Features
Read full description

Choose the language you're learning, your level, genre, characters, and ideas. Lecsium creates a personalized novel that unfolds chapter by chapter, with language-learning tools built directly into the reading experience. READ AT YOUR LEVEL Your story adapts to your language level, helping you spend more time reading and less time decoding text that's out of reach. UNDERSTAND WITHOUT LEAVING THE STORY Tap a word for an instant translation and contextual help, then keep reading without breaking immersion. READ AND LISTEN Listen to your chapters directly in the Reader and experience the story through both text and audio. BUILD VOCABULARY IN CONTEXT Save words you discover while reading and review them progressively in your vocabulary notebook. CREATE THE STORY YOU WANT Pick a genre and an idea, or use Author mode to shape characters, plot, and your fictional world. KEEP EVERYTHING TOGETHER Your novels, covers, vocabulary, and reading progress stay organized in your personal library. Learn through reading in English, Spanish, French, German, Italian, Portuguese, Japanese, and Korean. No endless stream of isolated sentences. Read because you want to know what happens next. Read. Understand. Progress. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Seonsaengnim4 screens
Lecsium4 screens

Verdict

The call

Seonsaengnim and Lecsium are too close to call on the numbers: across 6 compared parameters โ€” price, update cadence, ads and in-app purchases among them โ€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Seonsaengnim sells 5 in-app purchases, starting at $12.00 per month and Lecsium sells 3 in-app purchases, starting at $3.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Seonsaengnim ships an update every 5 days, Lecsium every 8 days. The most recent releases landed on November 10, 2026 and November 6, 2026 respectively.

ScorecardNo meaningful differences
Seonsaengnim versus Lecsium: the parameters behind the verdict, then further details
ParameterSeonsaengnimLecsium
PriceFreeFree
Positive reviews100.0% of reviewsโ€”
Update frequencyEvery 5 days โ€” betterEvery 8 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesโ€”
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.015.0
Further details โ€” not scored
Size140 MB62 MB
Age rating4+17+
DeveloperXOXO Inc.Nathan Grondin

In-app purchases

5 purchases

Seonsaengnim

Subscriptions2
  • Premium mensuel$12.001 Month
  • Premium annuel$129.001 Year
One-time3
  • Premium ร  vie$45.00
  • Premium ร  vie$59.00
  • Lifetime Full Price$89.00
3 purchases

Lecsium

Subscriptions3
  • Reader$3.991 Month
  • Author$5.991 Month
  • Ultra$12.991 Month

Questions

Is Seonsaengnim free?
Seonsaengnim is free to download, with in-app purchases available.
Is Lecsium free?
Lecsium is free to download, with in-app purchases available.
Do Seonsaengnim or Lecsium have ads?
Neither Seonsaengnim nor Lecsium shows ads.
Which is updated more often, Seonsaengnim or Lecsium?
Seonsaengnim ships an update every 5 days, and Lecsium every 8 days. Most recently, Seonsaengnim was updated on November 10, 2026 and Lecsium on November 6, 2026.

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