science AI Quiz vs LangBook
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
science AI Quiz
Test your science knowledge with AI-generated multiple-choice questions and explanations. Daily updates ensure a growing collection to deepen your understanding of scientific concepts. Explore the wonders of science and expand your learning.
- AI-generated multiple-choice questions
- Daily AI-generated explanations
- Growing collection of science topics
- Build broad scientific understanding
- Enrich science knowledge
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Science AI Quiz is an app where you solve multiple-choice questions about science, all generated by AI. With a growing collection of questions and AI-generated explanations added daily, you can build a broad understanding of science. Enrich your knowledge and enjoy the wonders of science with Science AI Quiz!
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 in-app purchases: science AI Quiz at none against LangBook's 2. LangBook's advantage is ads (none vs shown). On price, device support and iOS requirement 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. LangBook sells 2 in-app purchases, starting at $4.99 per month. science AI Quiz asks for nothing beyond the download.
| Parameter | science AI Quiz | LangBook |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Update frequency | — | Weekly |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad — better | iPhone |
| Requires iOS | 17.6 | 17.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 21 MB |
| Age rating | 4+ | 12+ |
| Developer | takeshi ogawa | KOSUKE NAKASONO |
In-app purchases
science AI Quiz
No in-app purchases
LangBook
- Basic$4.991 Month
- Plus$11.991 Month
