One Big Thing
Thomas Chatting Productivity iPhoneiPadiPod touch
One Big Thing is a free Productivity app for iPhone and iPad by Thomas Chatting. Requires iOS 17.6. Updated September 22, 2025.
- Price
- Free
- on the App Store
- Size
- 1 MB
- Age 4+
- Updated
- Sep 22
- 2025 · v1.2
Screenshots
About One Big Thing
A Todo app with ONE big difference. Set an intention for your day with one big thing. Review your previous Big Things. Receive notifications to remind you to check in on your big thing, and mark it as complete if you've done it.
What’s new
Version 1.2 · Updated September 22, 2025
Compiled for iOS26
App privacy
The developer, Thomas Chatting, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to One Big Thing
Looking for apps like One Big Thing? Here are 6 similar apps on the App Store. The highest rated is Just One Thing (5.0/5), and all 6 are free to download.
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Just One Thing
5.0
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Cria Planner: Plan Together
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Gathr Space
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Reusable Checklists
5.0
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Notes Ai Pro
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Focus To-Do: Pomodoro & Tasks.
1.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| One Big Thing | – | Free | September 22, 2025 | |
| Just One Thing | 5.0 / 5 (1) | Free | Oct 10, 2026 | Compare |
| Cria Planner: Plan Together | – | Free | Oct 11, 2026 | Compare |
| Gathr Space | – | Free | Sep 24, 2026 | Compare |
| Reusable Checklists | 5.0 / 5 (1) | Free | Feb 18, 2026 | Compare |
| Notes Ai Pro | – | Free | Dec 17, 2025 | Compare |
| Focus To-Do: Pomodoro & Tasks. | 1.0 / 5 (1) | Free | May 5, 2026 | Compare |
Compare One Big Thing with the top alternatives: ratings, updates, ASO score and keyword gaps →