Comparison

Language Diary vs KoLearn

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

Head to head
About

Language Diary

This app helps you improve language skills by writing a diary with AI-powered corrections for grammar, vocabulary, and syntax. It also offers peer collaboration, AI chat practice, and CEFR level evaluations to enhance your learning journey.

Highlights
  • AI-powered diary corrections
  • Chat and conversation with AI
  • Peer collaboration in teams
  • CEFR level evaluation
  • Voice recording for pronunciation
  • Attach images/videos to entries
  • Passcode lock for privacy
Features
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LangJournal helps you learn a language by keeping a diary, with AI corrections, explanations, follow-up questions, and review exercises. Write about your day in the language you're learning. AI checks grammar and unnatural expressions and helps you make your writing clearer and more natural. Each correction comes with an explanation, so you can understand why a change is needed and develop your writing skills. When you're unsure about an expression, you can ask AI directly. Ask questions about your diary, such as "Does this sound natural?", "What's the difference between 'the' and 'a'?", or "How can I say this more casually?" Keeping a diary is a way to practice writing and build a daily habit of using the language. Start with one short sentence and gradually build your grammar, vocabulary, and range of expressions. [Key Features] ■ Write a Diary With AI Corrections AI checks your diary as soon as you submit it. Get help with grammar, vocabulary, and unnatural expressions to make your writing more natural. ■ Understand Why a Correction Is Needed See why each corrected part needs to change. Review your writing with explanations, rather than just looking at the corrected answer. ■ Ask AI About Your Diary Ask AI any questions you still have after a correction. Explore nuances, grammar, alternative wording, and more natural ways to express yourself. ■ Review Your Mistakes Review by writing sentences in exercises based on corrections from your diary. Practice reducing repeated mistakes and reinforcing what you've learned. ■ Look Back With Weekly Reports Review your diary entries, AI chats, words used, and words used for the first time each week. See how many days you've practiced and how much you've done to help build a learning habit. ■ Check Your English Level With CEFR Analysis Analyze your diary against CEFR levels to get an indication of your English proficiency. See an overall assessment and breakdowns covering vocabulary, grammar, and verb forms. This feature is currently available for English learners. ■ Learn by Chatting With AI Characters Talk with AI characters such as Zena, Zeb, Leon, and Mari by text or voice. Build on topics from your diary or discuss a topic you enjoy to get more practice using the language. ■ Learn in 13 Languages Study English, Korean, Japanese, Chinese, Spanish, German, French, Italian, Portuguese, Dutch, Polish, Swedish, or Tagalog. ■ Share Diaries With a Team Join a team to share diary entries and exchange comments with others learning the same language. Learning together can help you keep going when it's hard to stay consistent on your own. This feature is currently available for learners of English, German, and Korean. ■ Get Daily Support From Zena Zena supports you with comments based on your learning activity. Start with a short diary entry and find encouragement to keep learning each day. [Recommended For] ■ Learners who want to develop natural expressions by keeping a diary ■ People who want to practice writing with AI corrections ■ Learners who want to understand their mistakes and avoid repeating them ■ People who want to learn at their own pace while asking AI questions ■ Learners who want more opportunities to use the language every day ■ People who find it hard to stay consistent alone and want to enjoy learning languages

About

KoLearn

Features
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Tired of boring flashcards? Dive into the fun and easy way to learn essential Korean vocabulary with KoLearn! KoLearn turns learning into an exciting adventure with a collection of engaging mini-games. Perfect for beginners, K-culture fans, travelers, and kids, our app helps you master hundreds of useful words from themes you actually care about. Key Features: - Fun & Engaging Games: Say goodbye to tedious memorization! Learn through interactive challenges like Word Quiz, Drag & Match, and Tap Burst that keep you motivated. - Themed Vocabulary: Don't just learn random words. Master vocabulary from popular and practical topics, including K-pop, Gaming, Travel, and Social situations. - Interactive Dictionary: Explore the full word list at your own pace. Listen to native pronunciation for every word, check difficulty levels, and add words to your personal favorites list. - Favorite Mode: Create your own custom learning deck! Play games using only the words you've saved to focus on what matters most to you. - Track Your Progress: Stay motivated by building your daily learning streak! Our calendar tracks your completed sessions, helping you make learning a consistent habit. - Smart Reminders: Create a consistent learning habit with reminders that arrive at the same time every day. - Kid-Friendly & Safe: With an intuitive interface and a focus on educational content, KoLearn provides a safe and effective learning environment for users of all ages. - Learn Offline: No internet? No problem! All core features run directly on your device, so you can keep learning on a plane, on the subway, or anywhere your adventure takes you. Our game-based approach is designed to help you remember words effectively. By making learning a daily habit, you'll build your vocabulary and confidence in no time. Download KoLearn today and start your fun journey to Korean fluency!

Screenshots

Language Diary4 screens
KoLearn4 screens

Verdict

The call

The clearest difference is price: Language Diary at Free against KoLearn's $0.99. KoLearn's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 16.4). On ads and device support there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Language Diary is free to download; KoLearn costs $0.99 up front. Language Diary sells 6 in-app purchases, starting at $4.99 per month. KoLearn asks for nothing beyond the download.

Scorecard3 real differences · 7 level
Language Diary versus KoLearn: the parameters behind the verdict, then further details
ParameterLanguage DiaryKoLearn
PriceFree — better$0.99
Rating4.4 (27 ratings) — better—
Positive reviews88.9% of reviews—
Number of ratings27 — better—
Update frequencyEvery 3 days—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS16.412.0 — better
Further details — not scored
Size100 MB195 MB
Age rating4+9+
DeveloperDaiki SatoRedbrick Inc

In-app purchases

6 purchases

Language Diary

Subscriptions6
  • Premium Monthly Subscription7 Days trial$4.991 Month
  • Pro Monthly Subscription7 Days trial$5.991 Month
  • CEFR+ Monthly Subscription$8.991 Month
Show 3 more
  • Premium Yearly Subscription7 Days trial$49.991 Year
  • Pro Yearly Subscription7 Days trial$59.991 Year
  • CEFR+ Yearly Subscription$89.991 Year
None

KoLearn

No in-app purchases

Questions

Is Language Diary free?
Language Diary is free to download, with in-app purchases available.
Is KoLearn free?
KoLearn costs $0.99, with no in-app purchases.
Do Language Diary or KoLearn have ads?
Neither Language Diary nor KoLearn shows ads.

Other comparisons