知识树 vs Multiply Fun
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
知识树
This intelligent learning system uses AI to understand knowledge, break down concepts, and dynamically schedule practice and review based on your memory state. It focuses on true retention through spaced repetition and scientific memory curves, not just completing exercises.
- AI-driven knowledge understanding
- Dynamic practice and review scheduling
- Breakdown of knowledge into testable points
- Spaced repetition for long-term memory
- Automatic assessment of mastery
- Progress tracking over speed
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这不是一款“多做题”的学习 App， 而是一套真正判断你是否学会的智能学习系统。 在这里，AI 不只是出题，而是先理解知识、拆解考点，再根据你的记忆状态动态安排练习与复习。 每一个知识点，都会被拆成清晰、可掌握的最小考点； 每一道题，都会服务于“真正记住”，而不是刷完就忘。 你不需要自己规划复习，也不需要反复猜“我到底学没学会”。 系统会结合你的答题表现与科学的记忆曲线，自动判断哪些内容已经稳定进入长期记忆，哪些还需要巩固。 当一个知识点被标记为“已掌握”， 意味着它已经经过多次间隔验证，而不是一次侥幸答对。 你看到的，不是题量，而是进度； 你追求的，不是速度，而是完成。
Multiply Fun
This app makes learning multiplication tables up to 19x19 engaging through visual geometry. It uses arrays and area models to help users understand number combinations rather than just memorizing. Interactive practice and challenges build skills and confidence for learners of all ages.
- Geometry-powered multiplication learning
- Visualize products as areas
- Interactive practice with instant feedback
- Activity-based challenges
- Supports multiplication up to 19x19
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Multiply Fun 19x19! transforms learning multiplication tables up to 19×19 into an exciting, visual experience. Designed for all ages, the app uses geometry—arrays, area models, and rectangular grids—to show how numbers combine, so learners see products instead of just memorizing them. With a friendly interface and interactive steps, Multiply Fun! builds skills and confidence—perfect at home, in class, or on the go. Features - Geometry-powered learning: visualize products as areas, split rectangles to decompose factors, and connect patterns to mental math - Interactive practice with instant feedback - Fun, activity-based challenges to keep users engaged Discover the magic of multiplication with Multiply Fun!
Screenshots
Verdict
The clearest difference is rating: Multiply Fun at 5.0 against 知识树's 4.2. 知识树's advantage is review sentiment (39% vs 0%) and ads (none vs shown). On price, ratings volume, in-app purchases and monetization model 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. 知识树 sells 4 in-app purchases, starting at $2.99 per month and Multiply Fun sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Multiply Fun holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 5 respectively. Written reviews complicate that: 39% of 知识树's written reviews are positive against 0% of Multiply Fun's, so the app with the better star average is not the one people write more warmly about.
知识树 ships an update every 5 days, Multiply Fun every 4 weeks. The most recent releases landed on October 6, 2026 and October 10, 2026 respectively.
| Parameter | 知识树 | Multiply Fun |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 38.9% of reviews — better | 0.0% of reviews |
| Number of ratings | 5 | 5 |
| Update frequency | Every 5 days — better | Every 4 weeks |
| Ads | No — better | Yes |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | Free with in-app purchases |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 2 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | 野 匡 | Mr.Darcy |
Customer experience
知识树
Multiply Fun
In-app purchases
知识树
- 月度会员$2.991 Month
- 季度会员$4.993 Months
- 年度会员$19.991 Year
- 终身会员$24.99
Multiply Fun
- Remove Ads$0.99
