Ceryn
Learn from your decisions
Free · Designed for iPhone. Not verified for macOS.
Capture decisions before memory rewrites them. Ceryn helps you reflect on outcomes, recognise patterns in your thinking, and improve the way you make choices over time.
We make decisions every day.
Most are forgotten.
Ceryn helps you capture important choices, revisit them later, and understand how your thinking evolves over time.
Record decisions in the moment.
Reflect on what actually happened.
Notice patterns in confidence, judgment, and outcomes.
Over time, Ceryn becomes a personal system for clearer thinking and better decisions.
Designed to feel calm, focused, and distraction-free.
Features:
• Quick decision capture
• Confidence tracking
• Outcome reviews
• Decision timeline
• Pattern insights
• Home screen widgets
• Private by design
No feeds.
No noise.
Just clearer thinking over time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What’s New in This Version
• New Apple Watch support for capturing decisions on the go
• Faster Quick Capture flow with improved voice capture launching
• Action Button integration for instant decision capture
• Improved Siri & Shortcuts support for hands-free logging
• New Ceryn widgets and complication support improvements
• Better syncing and reliability between Apple Watch and iPhone
The developer, Arthur Leliveld, 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
- Arthur Leliveld
- Size
- 7.6 MB
- Category
- Lifestyle
- Compatibility
Requires iOS 16.6 or later.
- iPhone
Requires iOS 16.6 or later. - Mac
Requires macOS 13.5 or later and a Mac with Apple M1 chip or later. - Apple Watch
Requires watchOS 11.6 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Leliveld Holding