Karuku:今日やらないことを決める

Content rating
Everyone
10+
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Content rating
Everyone
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About this app

Karuku is a quiet record-keeping app designed to lighten your mental burden by helping you decide on one thing you *won't* do today.

Instead of increasing your to-do list, decide to "not do this" today.

This app helps to lighten your day a little.

■ On days like these:
・You have too much to do, and just looking at your to-do list is exhausting.
・You tend to blame yourself for not doing anything.
・You feel guilty about resting.
・You get tired from comparing yourself to others on social media.
・You become paralyzed if you can't do things perfectly.
・You try to shoulder everything alone.

On days like these, simply decide, "I won't carry this burden today." That's all this app does.

■ How to use:
1. Write down just one thing you won't do today.
2. Press "Decide not to do."
3. "I don't need to carry that burden today. I've decided."

You can quietly review past records on the calendar. You can also leave a "short comment" if you feel like it.

■ What it Doesn't Do
Karuku is neither a to-do app nor a habit-tracking app.
• No completion rate, streak tracking, or score
• No evaluation of whether you succeeded or failed
• It won't rush or correct you

■ Quiet Design
• Local storage only (on your device only)
• No account registration required
• No ads
• No data collection or network transmission
• Export/import allows you to carry your records with you even when changing devices

■ Notifications
Only gentle reminders that don't rush you. You can set the time. It's off by default.
It's okay even if your lifestyle is irregular. You can change the "today" reset time to suit your life.

Just one thing you won't do today.

Karuku will make your day a little lighter.
Updated on
Jul 5, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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No data collected
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What’s new

はじめまして。Karuku(カルク)です。

今日「やらないこと」を、ひとつだけ決めて、そっと置いておく。
それだけの、静かな記録アプリです。

・今日やらないことを、ひとつ決めて下ろす
・「ひとこと」を、自分に残す
・軽くしてきた日々を、カレンダーで静かに見返す
・記録は端末の中だけ。書き出し / 読み込みで持ち運べます

今日は、それを背負わなくていい。決めたので。
Content rating
Everyone
Learn more

App support

About the developer
INOUE MASANORI
support@chiyoda-tombo.com
Japan