DecisionTwin
Learn From Every Decision
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
What if you had bought instead? Or held? Replay your investment decisions and watch three paths unfold from the day you made your choice.
DecisionTwin helps you understand your investment decisions — not just your portfolio.
Every investment decision creates a path you take, and paths you don't. DecisionTwin lets you record your decisions, replay what happened afterward, and explore what might have happened if you had bought, held, or sold instead.
Replay Your Decisions
Watch your investment decisions unfold over time. Replay the journey from the day you made a decision to today, and see how the Buy, Hold, and Sell paths evolved side by side.
Record Decisions from the Past
Your investment history doesn't have to start today. Create a decision using a historical date and see how the different paths would have played out from that moment onward.
Record Your Decisions
Capture the important moments behind your investments. Record what you decided, your position, and the reasoning behind the decision.
Explore What-If Scenarios
See how different choices could have played out over time. Compare the path you took with the alternatives you considered.
Track Your Positions
Keep track of your holdings and see how your investment decisions affect your portfolio over time.
Review Past Decisions
Markets move on, but your decisions remain worth reviewing. Look back at previous decisions, replay their outcomes, and reflect on the thinking behind them.
Focus on the Decision, Not Just the Result
A good decision doesn't always produce a good outcome, and a bad outcome doesn't necessarily mean the decision was wrong. DecisionTwin is designed to help you review the process behind your investment decisions.
DecisionTwin is a personal decision-tracking and reflection tool. It does not provide financial advice or recommendations.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's New
New in this version:
Decision Replay — Replay your investment journey from the day you made a decision to today, and watch the Buy, Hold, and Sell paths unfold over time.
Historical Decisions — Create decisions using a past date to see how different choices would have played out from that moment.
Simplified Position Management — A cleaner decision workflow without requiring a separate position setup.
Keep making decisions. Then see where each path leads.
The developer, gaowen tan, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- gaowen tan
- Size
- 21 MB
- Category
- Finance
- 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.
- iPhone
- Languages
- English and Simplified Chinese
- Age Rating
13+
- 13+
- In-App Purchases
Yes
- Pro Annual $79.99
- Pro Monthly $9.99
- Copyright
- © 2026 TiantangStudio
