ぴよToDo vs Second Brain
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ぴよToDo
A simple task management app with a reminder function to support your private and work life. Quickly create tasks and receive push notifications for unfinished items. Works offline for smooth performance.
- Simple UI with no unnecessary features
- Quick task creation
- Push notification reminders
- Offline task viewing
- Smooth performance
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やることを終えるたび、ぴよが集まる。 「ぴよToDo」は、毎日のタスク管理をちょっと楽しくする、シンプルなToDoアプリです。 難しい操作は必要ありません。 タスクを登録して、終わったらチェックするだけ。タスクを達成していくと、個性豊かなぴよたちが少しずつ解放されます。 【主な機能】 ・かんたんなタスク登録・編集 ・日付と時刻まで設定できる期限管理 ・期限が近づいたときの通知 ・今日のタスクを知らせる毎日のリマインダー ・期限順、作成順での並べ替え ・カレンダーで今後の予定を確認 ・ホーム画面ウィジェット ・完了したタスク数の記録 ・全30種類のぴよコレクション タスクをひとつ終えるたびに、小さな達成感を。 勉強、仕事、買い物、家事など、毎日のやることに気軽にお使いください。 ※通知機能は、端末の通知設定を許可した場合に利用できます。 ※ウィジェットはiPhoneのホーム画面から追加できます。
Second Brain
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Manage notes, to-dos, and your schedule in one app. Capture thoughts as notes, actions as to-dos, and anything with a date on the calendar. No more hopping between apps. ■ Notes Write fast, organize later. Sort into folders and find anything with search. Share only the notes you choose via a link, and unshare with a single tap. ■ To-Dos Set due dates and repeat rules. See what's left with D-Day countdowns, and group tasks by category. ■ Calendar See to-dos and events on the same screen. Switch between month and week views to check how full your week is. ■ Widgets Check today's tasks from your Home Screen and Lock Screen. See what's left without opening the app. ■ Notifications Get notified as deadlines approach. Start the day with a morning briefing and wrap up with a daily summary. ■ AI Organize Pull action items out of long text. Turn copied text into to-dos. Gather past records into a retrospective. AI features are free up to 3 times per month. To use more, connect your own AI API key. ■ Same content on every device Notes written on iPhone open on the web too. Sign in once and your content follows you across devices. ■ Privacy AI features only process text you explicitly send. See the privacy policy for details. https://docs.ainote.dev/legal/privacy
Screenshots
Verdict
The clearest difference is ads: Second Brain at none against ぴよToDo's shown. ぴよToDo's advantage is iOS requirement (17.0 vs 26.0). On price, update cadence, in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
ぴよToDo ships an update every 3 weeks, Second Brain monthly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.
| Parameter | ぴよToDo | Second Brain |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 40.0% of reviews | — |
| Update frequency | Every 3 weeks — better | Monthly |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 36 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Kazuyuki Ishida | Dcode |
In-app purchases
ぴよToDo
No in-app purchases
Second Brain
No in-app purchases









