hyperglyph vs LangBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
hyperglyph
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Learn a language from videos you actually want to watch. Hyperglyph puts three lines of subtitle under real video — English, the original script, and the pronunciation — all in sync. Tap any word to save it. It becomes a flashcard that plays back in a real voice. WATCH SOMETHING REAL Trailers, films, interviews, anime. Bring your own from YouTube, and hyperglyph transcribes and aligns it for you. UNDERSTAND, DON'T JUST TRANSLATE Tap the information icon on any phrase for a character-by-character breakdown, the literal meaning, the cultural context, and a memory hook. This is the part a translation app cannot do. BUILD A VOCABULARY THAT IS YOURS Every word you save from a film joins your deck. Type your own phrases too — they are translated, voiced, and filed alongside. REVIEW WITH SPACED REPETITION Cards come back exactly when you are about to forget them. Rate each one and the schedule adjusts. TALK TO A TUTOR THAT KNOWS YOUR WORDS Chat with an AI tutor that has read your vocabulary and drills you on the phrases you actually saved. Chinese, Japanese, and more. Free for a week, no card. Terms of Service: https://hyperglyph.app/terms Privacy Policy: https://hyperglyph.app/privacy
LangBook
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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
Verdict
The clearest difference is device support: hyperglyph at 3 against LangBook's 1. hyperglyph also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads 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
Both are free to download. hyperglyph sells 4 in-app purchases, starting at $4.99 per 7 days 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.
hyperglyph ships an update every 5 days, LangBook weekly. The most recent releases landed on October 7, 2026 and October 25, 2026 respectively.
| Parameter | hyperglyph | LangBook |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 5 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 13.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 54 MB | 21 MB |
| Age rating | 12+ | 12+ |
| Developer | North Island Technologies, LLC | KOSUKE NAKASONO |
In-app purchases
hyperglyph
- weekly$4.997 Days
- hyperglyph monthly$12.991 Month
- yearly$129.991 Year
- 200 credits$4.99
LangBook
- Basic$4.991 Month
- Plus$11.991 Month









