# Stock Principle: Trade Journal — AI Trading Diary & Rules Log

> AI Trading Diary & Rules Log (iPhone/iPad app by HyunJun Moon.)

- Source: https://appshunter.io/ios/app/stock-principle-trade-journal/id6789468040 (this page in markdown: same URL + `.md`)
- Developer: [HyunJun Moon](https://appshunter.io/developer/6774416204)
- Category: Finance, Productivity
- Price: Free
- Age rating: 17+
- Requires: iOS 15.0 · 49 MB
- Languages: American English, German (Germany), Japanese, Korean, Mexican Spanish, Chinese (Traditional, Hong Kong SAR China)
- Released: 2026-07-16
- Data updated: 2026-10-28

## What is Stock Principle?

Do you still remember why you bought that stock? Stock Principle is an AI trading journal, stock diary, and trading mistake tracker designed to help you log buy and sell reasons, master trading psychology, and build disciplined trading rules.

The day you chased a breakout and bought the top out of FOMO.
The day you ignored your stop-loss and held a losing position too long.
The day one impulsive revenge trade wiped out weeks of steady gains.
If you do not write down your thoughts in a trade journal, the same trading mistakes return in a different ticker.

■ A 3-Step Trading Journal Habit
1. Before you buy: Check your pre-trade checklist to verify your entry setup and trading rules.
2. After each trade: Log price, shares, and your emotional state in your buy and sell trade log.
3. After market close: Write a daily trading diary reflection and run an AI trade review.

■ From Entry to Exit, a Stock Diary for Your Reasons
• Organize buy, hold, and sell records stock by stock in one clean trade journal.
• Track US and global stocks in USD, KRW, or JPY with average cost and position size calculation.
• Set target profit and stop-loss percentages to see your target and stop-loss prices immediately.
• Record your entry mindset, checklist answers, and chart screenshots.
• While holding, log emotions like conviction, anxiety, impatience, fear, or greed with your plan.
• Review exit reasons and rule compliance to improve day trading and swing trading discipline.

■ AI Trade Review & 0–100 Discipline Scorecard
• AI quotes the sentences from your trading journal to evaluate your rules, compliance, and reflections.
• Get a 0–100 score across four pillars: Stop-Loss Discipline, Position Sizing, Entry Patience, and Emotion Control.
• Discover your trading persona and the emotional triggers behind your losing trades.
• Save IF-THEN rule cards directly into your trading checklist for the next session.

■ Trading Psychology & Behavioral Finance
• Understand how cognitive biases, loss aversion, confirmation bias, and herd behavior affect your trades.
• Connect behavioral finance concepts like FOMO and revenge trading to your own trade log.
• Bookmark articles and attach personal trading notes.

■ Principles & Investing Quotes from Market Masters
• Read trading rules and investing quotes from Warren Buffett, Peter Lynch, Jesse Livermore, and Ray Dalio with historical context.
• Save favorite quotes to your home screen and import master templates into your checklist.

■ Daily Trading Diary & Macro Dashboard
• Keep a daily stock diary with a one-line recap, what went well, what to fix, and home screen streak widgets.
• Monitor the Fear & Greed Index, VIX, US Dollar Index, 10Y–2Y yield spread, oil, and gold on one macro dashboard.

■ Built for Traders and Investors Who
• Gave up on clunky spreadsheet or paper trading journals after three days
• Set stop-loss rules before market open but struggle to follow them live
• Want a mistake tracker for day trading, swing trading, or stock investing
• Want to apply trading psychology and master investor principles to daily habits

■ FAQ
Q. Is it free to use?
A. Yes. The trade journal, daily stock diary, trading rules, checklists, behavioral finance articles, and master quotes are free. AI trade reports and AI rule generation use in-app credits, earned via sign-up bonus, daily check-ins, and rewarded ads.

Q. Do I need to link my brokerage account?
A. No. Stock Principle requires no brokerage login or account connection. You log trades manually and privately.

Q. Does it provide stock picks or signals?
A. No. This app does not recommend stocks, execute orders, or guarantee returns. It is a private trading journal for recording and reviewing your own decisions.

Turn today's regret into a rule for your next trade.
Start your trading journal with Stock Principle today.

Support: https://stockprinciple.web.app/support
Privacy Policy: https://stockprinciple.web.app/privacy.html

## Is Stock Principle safe?

Not enough ratings yet to assess Stock Principle.

## Is Stock Principle legit?

Stock Principle: Trade Journal appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Stock Principle is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.0.14 — 2026-10-28

• Updated and refined the principles of master investors and market cycle theories.
• Revised behavioral finance titles for enhanced clarity and precision.
• Unified the overall UI/UX design and redesigned app icons.
• Improved multilingual translation quality across the app.

### 1.0.13 — 2026-10-24

• Added master investor principles and discipline guide tabs.
• Refined multi-language translations and improved UI legibility.
• Enhanced startup speed and overall app stability.

### 1.0.12 — 2026-10-22

• Added profiles and investment philosophies of legendary investors.
• Introduced a dedicated trading journal tab to record and review trades.
• Refined UI/UX for a clearer and more intuitive experience.

### 1.0.11 — 2026-10-20

• Added a bookmarking feature for masters' principle quotes, now displayed on the Home tab.
• Refined and updated article contents.
• Improved indicator tooltip details for clearer guidance.

### 1.0.10 — 2026-10-18

• Added AI analysis feature for trading journals.
• Added a new article featuring Jim Cramer.
• Improved trading journal UI and usability.

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All apps by HyunJun Moon: https://appshunter.io/developer/6774416204

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-28.*