One Big Thing Journal
Focus on what matters most
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Focus your day with One Big Thing — a beautifully simple journal to capture and commit to your single most important priority, every day.
Inspired by the “One Big Thing” methodology: simplify your day by committing to one meaningful task — and get it done.
Key Features:
• Daily Focus – Capture and complete your most important task each day in a clean, distraction-free interface
• Streak Tracking – Build momentum with visual streaks and achievement milestones
• Smart Reminders – Stay on track with customizable daily notifications
• History Timeline – Review your progress at a glance
Why it works:
The One Big Thing approach cuts through overwhelm and decision fatigue by helping you focus on what matters most — one task at a time. Perfect for professionals, students, and anyone seeking to build a simple, sustainable productivity habit.
Start your streak today and discover how powerful one focused action each day can be
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Tassilo von Gerlach, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tassilo von Gerlach
- Size
- 5.2 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2025 Tassilo von Gerlach