Three Layer Thinking
Reflect. Decide. Learn.
Free
Turn one question into a considered decision. Record your instinct, explore 29 mental models, reflect on six coin rounds, and track what happens next.
What is on your mind?
Three Layer Thinking helps you work through one question, compare three perspectives, and choose a practical next action. Your draft saves as you go, so you can take your time and return later.
FAST THINKING
Record your first instinct before analysis. Note how you feel, relevant experience, your motivations and fears, and your confidence in the intuitive answer.
SLOW THINKING
Separate facts from assumptions and examine the root cause. Work through 29 mental models, including inversion, opportunity cost, incentives, scenario planning and negotiation. Add a response to each lens or mark it not applicable. Bring the analysis together into one recommendation and an execution plan.
COIN REFLECTION
Take a quiet moment, then simulate three coins across six rounds using the traditional Yijing method. Watch the coins land and see every saved result. Explore the original and changing hexagrams with plain-English and Chinese reflection notes, plus an optional inner hexagram. These themes invite reflection about preparation, timing and assumptions; they do not predict events.
ONE DECISION
Compare your intuitive answer, structured analysis and symbolic reflection. Explain where they agree or conflict, choose one decision, and set a next action, success measure, review date and revision trigger.
LEARN FROM THE RESULT
Save completed decisions to your journal. Return to record what happened, capture lessons, adjust the next review date, and share the complete decision record as text.
OPTIONAL ON-DEVICE AI
On eligible devices with Apple Intelligence enabled and its model ready, AI can draft model responses, recommendations and reflections. Review and edit every draft. The complete guided workflow also works without AI.
Designed for iPhone and iPad running iOS or iPadOS 26 or later. No account is required. Decision records are stored locally, with no advertising or analytics SDK. Device backups may include your records, and exporting shares them with the destination you choose.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, xuegang Fang, 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
- xuegang Fang
- Size
- 1.1 MB
- Category
- Productivity
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - iPad
Requires iPadOS 26.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Mature or Suggestive Themes
Horror/Fear Themes
Contains
Health or Wellness Topics
- Copyright
- © 2026 Mike Fang
