KanjiBox vs Forest Fun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
KanjiBox
Master Japanese language skills offline with interactive drills, quizzes, and flashcards. Track progress with detailed stats and game-like achievements. Includes handwriting practice and preparation for standardized tests.
- Offline Japanese study
- Drills, quizzes, and flashcards
- Handwriting practice modules
- Progress tracking and achievements
- JLPT and Kanji Kentei preparation
- Adaptive learning with SRS
- Customizable study sets
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KanjiBox is a focused Japanese kanji and vocabulary trainer for learners at every level, from first-time beginners to advanced JLPT N1 candidates. • Simple yet effective algorithm Spaced Repetition System and smart Multiple Choice algorithm, combined to optimize your learning and track your progress • Multiple Modes to keep you motivated From Flashcards, to Drill training, to Gamified Quiz • No AI Slop KanjiBox was first released 19 years ago, and has helped hundreds of thousands achieve written Japanese mastery ever since. It does not, and will never, rely on half-baked LLM-driven content — — — — — — — — — — — — — KANJIBOX IS SMART — — — — — — — — — — — — — KanjiBox adapts to your performance by prioritizing items you struggle with, and reducing repetition of material you already know. As you progress, it will introduce new kanji and vocabulary, but always while following your pace. Spend more time on what needs work, and less time reviewing what you have already mastered. — — — — — — — — — — — — — KANJIBOX IS A MEAN TEACHER — — — — — — — — — — — — — Behind the deceptively simple Multiple Choice Question format, is a well-oiled algorithm designed to trip you up: similar-looking kanji, subtle pronunciation differences, closely-related grammatical words… Because the goal is to learn the language, not how to beat the test. — — — — — — — — — — — — — KANJIBOX IS ENGAGING — — — — — — — — — — — — — Exhaustive stats across levels and categories show you what you have mastered, what needs more practice, and how your results improve over time. Quiz mode adds a fun competitive element to your studying. Because serious should not mean tedious! — — — — — — — — — FEATURES — — — — — — — — — • Full JLPT N5–N1 kanji and vocabulary coverage • Sensei mode with 6,355 kanji, ~40,000 vocab words • Beginner mode with hiragana and katakana • Works fully offline • Custom Study Sets • Sync all learning stats and progress across devices • Add-ons to practice handwriting kana and kanji • Add-ons to practice specific grammar points Whether you are preparing for the JLPT, studying Japanese at school, or building your reading ability for everyday use, KanjiBox gives you a clear and practical way to improve. 始めましょう!Let's get started!
Forest Fun
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Suis Tim le long d’un parcours en forêt et découvre tout ce que renferme ce milieu. Énigmes, quiz et bien plus encore composent cette application pour mieux comprendre la forêt, ses fonctions et tout ce qui gravite autour. Tu pourras ainsi aborder la forêt sous de nombreuses facettes avec toujours en toile de fond les arbres et le bois. Laisse-toi guider au travers de ce sentier didactique et découvre la richesse de tout ce que la forêt peut offrir mais aussi la complexité de sa gestion. Forest Fun propose des jeux et une variété d’autres contenus éducatifs pour les fans ou curieux de la forêt (5 à 10 ans). Couplé à un sentier didactique d’environ 3 km, ce jeu permet à toute la famille de faire des découvertes et de porter un regard neuf sur la forêt. -------- Forest fun a été créé par le projet Interreg Forêt Pro Bos qui rassemble 11 partenaires wallons, flamands et français. Il a la volonté de développer la filière bois de notre région et de la valoriser auprès du plus grand nombre. Conception graphique & technique : Furet Company
Screenshots
Verdict
The clearest difference is price: Forest Fun at Free against KanjiBox's $4.99. Forest Fun also leads on in-app purchases (none vs 8) and iOS requirement (13.0 vs 16.0). KanjiBox's advantage is update cadence (weekly vs every 12 months). 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
Forest Fun is free to download; KanjiBox costs $4.99 up front. KanjiBox sells 8 one-off in-app purchases. Forest Fun asks for nothing beyond the download.
KanjiBox ships an update weekly, Forest Fun every 12 months. The most recent releases landed on October 24, 2026 and October 10, 2026 respectively.
| Parameter | KanjiBox | Forest Fun |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.6 (138 ratings) — better | — |
| Positive reviews | 92.8% of reviews | — |
| Number of ratings | 138 — better | — |
| Update frequency | Weekly — better | Every 12 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 361 MB | 278 MB |
| Age rating | 9+ | 4+ |
| Developer | Unknown Genius Software | Furet Company |
Bugs and requests
KanjiBox
Reported bugs
3 issues- App crashes when launching at higher JLPT levels
- Syncing issues between mobile and web versions
- Incorrect kanji/vocabulary definitions in some cases
Requested features
4 requests- Add more grammar and sentence-level practice
- Improve kanji writing recognition accuracy
- Allow searching for specific kanji or vocabulary
- Provide more detailed review of missed questions
Forest Fun
Not enough reviews yet to summarise bugs or requests.
In-app purchases
KanjiBox
- KanjiDraw$0.99
- KanaDraw$0.99
- Grammar - Beginner I: Particles$0.99
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- Grammar - Intermediate I$0.99
- Grammar - Beginner II: Where? When?$0.99
- Grammar - Beginner III: 後, 前, 上, 下...$0.99
- Advanced I: ところ+に,で,へ,を...$0.99
- Vocab N5 Nouns (pt. 1)$0.99
Forest Fun
No in-app purchases









