Comparison

Text Alchemy vs LangBook

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

Head to head
About

Text Alchemy

Features
Read full description

Tired of memorizing vocabulary and sentences from textbooks? Learn languages with content you actually love. "Text Alchemy" transforms what truly interests you—lyrics, dialogues, tweets, articles—into your personalized learning materials. From now on, the entire internet and world become your textbook. Three Unique Features: Scientific Memory System — Visible Memory Growth Every word has "memory freshness" and "memory shelf life," just like food freshness. Gold represents fresh memory, green indicates review needed—grasp your learning state at a glance. The system uses the FSRS (Free Spaced Repetition Scheduling) algorithm to precisely remind you to review when memory freshness drops to 60%—review at the optimal moment with minimal effort for maximum effect. Each successful review extends the shelf life from days to weeks to months, allowing you to see the transformation from short-term to long-term memory. Sentence-by-Sentence Deep Analysis — More Than Translation, Understanding Nuance AI explains the tone, emotion, and usage context of each sentence, automatically breaking down complex long sentences into simple structures. Understand contextual relationships and cultural nuances all at once. Word Comparison — Master Similar Word Differences What's the difference between "頑張る" and "努力する"? Enter similar words, and AI deeply analyzes usage scenarios, nuance differences, and common collocations, showing you when to use which word. What You'll Get: Memorable Vocabulary — From content you love, with scientific spaced repetition Truly Understood Sentences — Tone, structure, cultural context fully analyzed Usable Language Sense — Learn real-world expressions Visible Progress — Visual tracking of memory shelf life extension Stop being limited to Lesson 1, Lesson 2. Learn with content you love—remember fast, retain long, use naturally. Download "Text Alchemy" and make learning something you look forward to. Privacy Policy: https://lessismore521.blogspot.com/2025/12/privacy-policy-for-text-alchemy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

LangBook

Features
Read full description

Build your Japanese writing habit, one sentence at a time. This app helps you practice Japanese through daily journaling, AI feedback, vocabulary review, and flashcards. Write about your feelings, your day, or a guided topic, then receive feedback on grammar, vocabulary, expression, and natural flow. It is designed for learners who want to write more Japanese, build confidence, and make Japanese study part of their daily routine. ■ Japanese journal Write freely about your day or choose a guided topic when you are not sure what to write. Start small with just one sentence a day. ■ AI feedback Get clear feedback on grammar, vocabulary, expression, and natural flow. The AI helps you make your Japanese sound more natural and easier to understand. ■ Track your progress See your score, study streak, learning time, and skill balance. Visual progress helps you stay motivated. ■ Vocabulary and flashcards Save important words and review them with flashcards. Practice forgotten words and turn them into usable vocabulary. ■ Recommended for: ・Learners who want to write a Japanese diary ・Students who want to improve Japanese writing ・People looking for AI Japanese correction ・Learners who want to practice Japanese grammar and vocabulary ・Anyone who wants to study Japanese every day ・Students who want to review words with flashcards One sentence a day can become tomorrow’s confidence. Start writing in Japanese today. Some AI features require a subscription. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://privacyenglsih.bridra.net

Screenshots

Text Alchemy4 screens
LangBook4 screens

Verdict

The call

The clearest difference is ads: LangBook at none against Text Alchemy's shown. LangBook also leads on update cadence (weekly vs fortnightly). Text Alchemy's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 17.0). On price and in-app purchases 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

Both are free to download. Text Alchemy sells 4 in-app purchases, starting at $5.99 per month and LangBook sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Text Alchemy ships an update fortnightly, LangBook weekly. The most recent releases landed on September 26, 2026 and September 29, 2026 respectively.

Scorecard4 real differences · 2 level
Text Alchemy versus LangBook: the parameters behind the verdict, then further details
ParameterText AlchemyLangBook
PriceFreeFree
Update frequencyFortnightlyWeekly — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS12.0 — better17.0
Further details — not scored
Size74 MB21 MB
Age rating4+12+
DeveloperChun Yu KamKOSUKE NAKASONO

In-app purchases

4 purchases

Text Alchemy

Subscriptions4
  • Premium$5.991 Month
  • Premium+ Monthly$11.991 Month
  • Premium yearly$59.991 Year
Show 1 more
  • Premium+ Yearly$119.991 Year
2 purchases

LangBook

Subscriptions2
  • Basic$4.991 Month
  • Plus$11.991 Month

Questions

Is Text Alchemy free?
Text Alchemy is free to download, with in-app purchases available.
Is LangBook free?
LangBook is free to download, with in-app purchases available.
Do Text Alchemy or LangBook have ads?
Text Alchemy shows ads; LangBook does not.
Which is updated more often, Text Alchemy or LangBook?
Text Alchemy ships an update fortnightly, and LangBook weekly. Most recently, Text Alchemy was updated on September 26, 2026 and LangBook on September 29, 2026.

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