CaptaLog vs 3 Seconds Memo
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CaptaLog
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Never forget a moment of inspiration. CaptaLog is a fast logging app that lets you capture ideas by simply speaking on your Apple Watch. Thoughts, insights, ideas. Record them instantly—during meetings, on the move, or whenever inspiration strikes. No editing or formatting. Just focus on capturing. Your daily logs are organized in a timeline, with related entries connected to preserve context. When you look back, the flow of your day comes back naturally. AI analyzes your daily logs to generate summaries and draft ideas. Turn reflections and insights into your next output with ease. CaptaLog helps you keep the flow of your thinking, just as it is.
3 Seconds Memo
This app allows for rapid note-taking and idea capture, opening directly to a creation screen. It offers offline functionality, local data storage, and organizational tools like categories and tags. Premium features include ad-free usage, data export, and custom categories.
- Immediate memo creation on launch
- Offline functionality
- Local-only data storage
- Organize with categories and tags
- Attach photos to memos
- Lock Screen widget for quick access
- Export to Markdown and CSV (Premium)
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3-Second Memo is a simple notepad app for quickly writing down and saving ideas, notes, and content ideas the moment they come to mind. ■Concept Instead of complex features, 3-Second Memo focuses on letting you write as quickly and easily as possible. It helps you capture ideas you might otherwise think, “I’ll write it down later,” and use the app casually as your personal idea notebook. ■Features of 3-Second Memo - When you launch the app, the memo creation screen opens immediately. - Works offline. Use it anytime, anywhere, whether on the subway or on a plane. - Your memo content is saved only on your own device. It is never used for AI training or similar purposes. - To improve the app, we collect only usage statistics, such as the number of times memos are written. ■Main Features - Start writing immediately after launching the app - View saved memos in chronological order - Organize memos clearly with categories and tags - Convenient offline access - Attach photos to memos to save visual notes, references, and ideas - View attached photos as an album from the category list page - Add a launch widget to the Lock Screen for quick access to memo creation - Local-only data storage. Your data is not saved on the operator’s servers. ■Premium Benefits - Use the app comfortably without ads - Export to Markdown and CSV for easy integration with AI and other tools - Add custom categories, making it possible to manage notes by projects that suit you, such as “Streaming Ideas” or “Development” - Copy memos by category in bulk, so you can easily move each category into other tools ■Important Notice Before using this app, please review the Terms of Use and Privacy Policy below. Japanese - Terms of Use: https://3s-memo.tea-19.com/ja/terms/ - Privacy Policy: https://3s-memo.tea-19.com/ja/privacy/ English - Terms of Use: https://3s-memo.tea-19.com/en/terms/ - Privacy Policy: https://3s-memo.tea-19.com/en/privacy/
Screenshots
Verdict
The clearest difference is in-app purchases: CaptaLog at none against 3 Seconds Memo's 2. CaptaLog also leads on ads (none vs shown). 3 Seconds Memo's advantage is iOS requirement (16.4 vs 26.2). On price, update cadence 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
Both are free to download. 3 Seconds Memo sells 2 in-app purchases, starting at $2.99 per month. CaptaLog asks for nothing beyond the download.
CaptaLog ships an update every 2 weeks, 3 Seconds Memo weekly. The most recent releases landed on October 8, 2026 and October 6, 2026 respectively.
| Parameter | CaptaLog | 3 Seconds Memo |
|---|---|---|
| Price | Free | Free |
| Positive reviews | — | 100.0% of reviews |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No — better | Yes |
| In-app purchases | No — better | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 26.2 | 16.4 — better |
| Further details — not scored | ||
| Size | 8 MB | 72 MB |
| Age rating | 4+ | 4+ |
| Developer | ARIMASA MORIYA | Aiju Kawase |
In-app purchases
CaptaLog
No in-app purchases
3 Seconds Memo
- Montly Plan1 Month trial$2.991 Month
- Annual Plan1 Month trial$29.991 Year









