Comparison

ブクメモ vs 3 Seconds Memo

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

Head to head
About

ブクメモ

Features
Read full description

ブクメモは、読書中に“重要なところだけ”を素早く残し、後から復習しやすくする読書メモアプリです。 フォルダで本を整理し、章(区切り)ごとにメモを並べて管理できます。要点・まとめは見やすく強調されるので、重要部分だけを素早く見直せます。 主な機能 ・本をフォルダで整理 ・章(区切り)ごとにメモを順番に管理 ・要点/まとめのメモを強調表示 ・ウィジェットでランダムに要点を表示(Pro) Pro(買い切り/月額) ・フォルダ無制限 ・フォルダのアイコン/色の追加 ・ウィジェット機能の利用 利用規約 https://endurable-plant-b89.notion.site/31e4b24699678092885af93fb8613250

About

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.

Highlights
  • 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)
Features
Read full description

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

ブクメモ3 screens
3 Seconds Memo4 screens

Verdict

The call

The clearest difference is in-app purchases: ブクメモ at none against 3 Seconds Memo's 2. 3 Seconds Memo's advantage is update cadence (weekly vs every 2 months). 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. 3 Seconds Memo sells 2 in-app purchases, starting at $2.99 per month. ブクメモ asks for nothing beyond the download.

UpkeepUpdate frequency

ブクメモ ships an update every 2 months, 3 Seconds Memo weekly. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 6 level
ブクメモ versus 3 Seconds Memo: the parameters behind the verdict, then further details
Parameterブクメモ3 Seconds Memo
PriceFreeFree
Positive reviews—100.0% of reviews
Update frequencyEvery 2 monthsWeekly — better
AdsYesYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.016.4 — better
Further details — not scored
Size6 MB78 MB
Age rating4+4+
DeveloperAKITO YAMAZAKIAiju Kawase

In-app purchases

None

ブクメモ

No in-app purchases

2 purchases

3 Seconds Memo

Subscriptions2
  • Montly Plan1 Month trial$2.991 Month
  • Annual Plan1 Month trial$29.991 Year

Questions

Is ブクメモ free?
ブクメモ is free to download, with no in-app purchases.
Is 3 Seconds Memo free?
3 Seconds Memo is free to download, with in-app purchases available.
Do ブクメモ or 3 Seconds Memo have ads?
Both ブクメモ and 3 Seconds Memo show ads.
Which is updated more often, ブクメモ or 3 Seconds Memo?
ブクメモ ships an update every 2 months, and 3 Seconds Memo weekly. Most recently, ブクメモ was updated on October 25, 2026 and 3 Seconds Memo on October 31, 2026.

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