三省 vs Watermelon
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
三省
This cognitive tool uses cards for recording, reviewing, and self-dialogue to aid memory and clear thinking. It offers flexible input methods, knowledge networking, and visual mind mapping to enhance understanding and reflection.
- Card input (typing & handwriting)
- Bidirectional knowledge linking
- Visual mind maps
- Self-dialogue mechanism
- Spaced repetition review
- Cognitive graph building
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三省是一款以卡片为核心,融合“记录 - 复习 - 自我对话”的认知工具。 它不仅帮你记住,更帮你想清楚。 功能亮点: • 卡片双模式:打字 + 手写 快速输入与自由书写并存,表达更灵活。 • 正反向关联,构建知识网络 支持思维“前因后果”双向连接,轻松搭建属于自己的认知图谱。 • 可视化思维导图 所有卡片自动生成地图,思考路径一目了然。 • 自我对话机制 定期发问、回顾、反思,从记录走向理解。 • 基于记忆曲线的智能复习 每天推荐最该复习的卡片,省时高效。 隐私政策:https://jq3so8rvxu.feishu.cn/docx/V5EpdASeuoQuzYx5ogQc6lVan0e?from=from_copylink 使用条款:https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Watermelon
This app transforms spoken thoughts into organized tasks, projects, and plans. It automatically breaks down goals, tracks progress beyond simple completion, and offers various views for daily planning and reflection. It's designed for users who think faster than they can type.
- Voice-to-task capture
- AI-powered task breakdown
- Multiple progress tracking types
- Daily and project planning views
- Calendar diary for notes and moments
- Home screen widgets
- On-device transcription for privacy
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Speak your mind. AI sticks it. Turn a brain dump into sticky notes you can act on. Watermelon brings your to-do list, quick notes, and everyday ideas onto a colorful board, with AI to help sort what needs doing from what you want to remember. SAY IT WHILE IT’S FRESH Hold to speak and capture several thoughts in one go. Watermelon can separate them into tasks and notes, picking out dates and details for your to-dos. Prefer typing? Type your thoughts, or paste text and links into a quick note. A PLACE FOR TASKS AND IDEAS Buy groceries. Call the plumber tomorrow. Save an idea for the weekend. Keep actions and reference notes together, without turning every thought into something to check off. Move sticky notes to make the board your own, or switch to the classic view. PROGRESS YOU CAN SEE Give each task the structure it needs: • Checklists for groceries, packing, and errands • Stages for work with a few clear steps • Counts for pages read or repetitions completed • Percentages for work that moves forward a little at a time AI can suggest a structure, and you can edit it. See how far you’ve come before a task is finished. CHANGE PLANS OUT LOUD Hold a task card and say “move it to Friday,” “add milk,” or “make it high priority.” Review the suggested changes and apply them when they look right. START THE DAY WITH A NEXT STEP Use Daily Check-in to revisit loose ends, note what’s blocked, and choose a next step. In the evening, Daily Recap brings together the tasks you completed that day. KEEP YOUR DAY CLOSE Organize work and life into lists and projects. Set reminders, keep tasks handy with Home Screen widgets, and capture or check tasks on Apple Watch. Add notes and photos to your calendar diary when there’s more to remember. START FREE Get started without creating a Watermelon account. Free AI actions are included; usage limits apply. Pro adds features including unlimited projects, iCloud sync, and calendar sync. AI availability depends on your device and selected service; cloud AI requires internet access and may process the text you provide. Some features require Pro or system permissions. Get it out of your head. Give it a place in Watermelon. Terms of Use: https://feiou.github.io/WatermelonTodo/terms_of_use.html Privacy Policy: https://feiou.github.io/WatermelonTodo/privacy_policy.html
Screenshots
Verdict
The clearest difference is update cadence: Watermelon at every 4 days against 三省's every 6 months. On price, rating, ratings volume and ads 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. 三省 sells 3 in-app purchases, starting at $2.99 per month and Watermelon sells 4 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 5.0 for 三省 against 5.0 for Watermelon. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
三省 ships an update every 6 months, Watermelon every 4 days. The most recent releases landed on August 11, 2026 and September 15, 2026 respectively.
| Parameter | 三省 | Watermelon |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (4 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 6 months | Every 4 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 17.0 | 17.0 |
| Further details — not scored | ||
| Size | 30 MB | 509 MB |
| Age rating | 4+ | 4+ |
| Developer | 嘉达 黄 | Feiou Su |
Customer experience
三省
Watermelon
In-app purchases
三省
- ThreeTimes - Monthly Plan$2.991 Month
- ThreeTimes - Yearly Plan$4.991 Year
- ThreeTimes - Lifetime Plan$9.99
Watermelon
- Cloud AI Monthly7 Days trial$5.991 Month
- Watermelon Unlimited Annual$29.991 Year
- 200 Cloud AI credits$2.99
- Watermelon Unlimited Lifetime$39.99









