Comparison

Sitor vs Memo Clock

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sitor

Features
Read full description

Sitor 是你的 AI 私教。告诉它你想学什么,它会为你规划学习路线、逐步引导、检验掌握程度,让学习真正发生。 核心体验: - 你的材料,就是教材:论文、PPT、电子书、音视频、YouTube/Bilibili 链接——什么格式都能消化。 - 苏格拉底式引导:AI 不直接给答案,而是提问、引导、纠偏——直到你自己建立完整的逻辑链 - 个性化路线图:输入任何主题,AI 先调研全局——核心概念、知识关联、常见误区——为你生成专属学习地图 - 掌握度评估:AI 从多个维度检验你的理解,真正掌握才能解锁下一阶段 - 可视化教学:对话中实时生成图表和知识结构,不是静态幻灯片,而是根据你的理解动态绘制 - 语音交互:支持语音输入和 AI 语音回复,随时随地学习 - 间隔重复:在科学的时间点带你回顾,让遗忘曲线一次比一次平缓 适合终身学习者。编程、数学、语言、投资、营养学等等——任何你想深入的领域都可以。 —————— 订阅与法律信息 Sitor 提供自动续期订阅(Starter / Pro,按月或按年计费),价格以购买页显示为准。订阅将自动续期,你可以随时在 Apple 账户设置中管理或取消。 服务条款(EULA):https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 隐私政策:https://sitor.cc/privacy

About

Memo Clock

Capture and review important information efficiently with this minimalist note-taking app. Save text, handwriting, or images as memos and schedule timely reminders for review. Ideal for students preparing for exams by consolidating key points and mistakes.

Highlights
  • Capture text, handwriting, or image memos
  • Schedule review frequencies and reminders
  • Ideal for exam preparation
  • Simple and lightweight interface
  • Syncs via iCloud
Features
Read full description

Memo Clock is a memory and review application designed for learners. It is suitable for those who really want to keep their knowledge: students who are preparing for the exam, learners who want to sort out the course content, those who need to repeatedly consolidate concepts, formulas, wrong questions and vocabulary, or those who want to build their own long-term knowledge base. Many times, it is not that we don't study, but the notes are scattered in different places, the pace of review is unstable, and the content that we really forget is not found in time. What Memo Clock hopes to solve is the distance between "recording" and "really remembering". Here, you can organize your knowledge into a memo that is more suitable for review. Memo Clock will help you arrange review, review forgotten content, record the pace of learning, and provide more suitable review methods for different stages. You can be more concentrated before the exam, your daily life can be more stable, and you can also complete a little lightly in the fragment time. Memo Clock is not just a notebook or a reminder tool. It is more like a quiet study workbench: helping you store knowledge, organize reviews, check your mastery, and gradually form more sustainable learning habits. You can start from the preset database, import your own content, or share information with your classmates and friends. Whether it's a course, an exam, or a long-term learning goal, Memo Clock hopes to help you move on in a clearer and more stable way. Take down the knowledge and let it come back to you at the right time.

Screenshots

Sitor4 screens
Memo Clock4 screens

Verdict

The call

The clearest difference is in-app purchases: Memo Clock at none against Sitor's 10. Sitor's advantage is update cadence (every 2 days vs monthly). On price, ads, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sitor sells 10 in-app purchases, starting at $11.99 per month. Memo Clock asks for nothing beyond the download.

UpkeepUpdate frequency

Sitor ships an update every 2 days, Memo Clock monthly. The most recent releases landed on September 13, 2026 and September 6, 2026 respectively.

Scorecard2 real differences · 6 level
Sitor versus Memo Clock: the parameters behind the verdict, then further details
ParameterSitorMemo Clock
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 2 days — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
Monetization—Free
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.017.0
Further details — not scored
Size41 MB13 MB
Age rating4+4+
DeveloperHangzhou Sitor Cloud Technology Co., Ltd.原赫 张

In-app purchases

10 purchases

Sitor

Subscriptions4
  • Starter Monthly$11.991 Month
  • Pro Monthly$23.991 Month
  • Starter Annual$93.991 Year
Show 1 more
  • Pro Annual$187.991 Year
One-time6
  • 50 Credits$3.99
  • 200 Credits$12.99
  • 500 Credits$27.99
Show 3 more
  • 1000 Credits$49.99
  • 3000 Credits$129.99
  • 5000 Credits$199.99
None

Memo Clock

No in-app purchases

Questions

Is Sitor free?
Sitor is free to download, with in-app purchases available.
Is Memo Clock free?
Memo Clock is free to download, with no in-app purchases.
Do Sitor or Memo Clock have ads?
Neither Sitor nor Memo Clock shows ads.
Which is updated more often, Sitor or Memo Clock?
Sitor ships an update every 2 days, and Memo Clock monthly. Most recently, Sitor was updated on September 13, 2026 and Memo Clock on September 6, 2026.

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