知识树 vs Least Common Multiple Solver
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。
Least Common Multiple Solver
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Finish your homework instantly. Prepare for exams without stress. Free, complete step-by-step solutions. Enter your numbers and calculate the Least Common Multiple (LCM). HOW IT WORKS Enter your numbers into the appropriate fields and get started. You'll receive the solution instantly and can share it with friends or classmates. YOUR PERSONAL DATA We don't need it. Only anonymous data is collected, for example: - which features are used - how many solutions are generated This helps us improve the app. It is not possible to identify you from this data. COSTS Everything can be used for free. Access your solutions 24/7. Every solution always includes all calculation steps. If you need a large number of solutions in a short time, various purchase options are available. EXTRAS - Prime Factorization - Using Multiples - Curated learning videos - Feedback for incorrect input - Manage your own solutions - App introduction CONTACT Questions and feedback are always welcome via Discord or directly in the app review.
Screenshots
Verdict
The clearest difference is iOS requirement: Least Common Multiple Solver at 15.0 against 知识树's 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. 知识树 sells 4 in-app purchases, starting at $2.99 per month and Least Common Multiple Solver sells 7 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
知识树 ships an update every 5 days, Least Common Multiple Solver weekly. Both last shipped on September 23, 2026.
| Parameter | 知识树 | Least Common Multiple Solver |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) — better | — |
| Positive reviews | 38.9% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 5 days — better | Weekly |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Freemium | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 2 MB | 179 MB |
| Age rating | 4+ | 4+ |
| Developer | 野 匡 | Glindemann, Sennoun, Langer GbR |
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
Least Common Multiple Solver
- +30 User Tokens$0.29
- +1 Convenience Token / 6h, max. +2$0.59
- +150 User Tokens$0.99
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- +2 Convenience Tokens / 6h, max. +4$0.99
- +300 User Tokens$1.49
- +4 Convenience Tokens / 6h, max. +8$1.59
- Lifetime Access$1.99
