Fundamental: Investing Journal

See the principles you set

Only for iPhone

Free · Designed for iPhone. Not verified for macOS.

iPhone

Revisit the principles you wrote when you bought, right when you are shaken. The decisions and reasons stay in your journal. Revisit the reason you wrote when you bought. Most investing apps put returns and a ticking price on the first screen. The number lifts you when it rises and rattles you when it falls, and pushes you into impulse trades. Fundamental puts the reason you bought in that place. The principles you set at purchase sit on the first screen, so when you're anxious what you see is "is my reason for buying still true?" ■ How you use it · Set buy principles: write, in your own words, why you'll keep holding. · A calm home: just your own standards, quietly kept. · Check: when anxious, weigh your principles one by one. · Reappraise: when a principle is shaken, look back at the calmer past you, then decide for yourself to hold, revise, or sell, and record it. Selling stays your call. · Questions to sit with: keep the questions worth returning to, about the world and about companies. · Journal and retrospect: your decisions and their reasons build up, reflecting what kind of investor you are. ■ What we keep to · All this app takes is the name, your principles, and the decisions you make. · Your records stay on this device, yours without an account. · Fundamental is a mirror. The judgment is always yours. Your principles are a seatbelt the calmer past you fastens for the shaken you now. In rough seas, drop the anchor of your principles.

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A new tab: Questions to sit with. A place for questions that outlast any one holding. Tag them by what they look at, like rates, FX, or moats, and narrow the list by tag. You make the tags yourself, and drop the ones you do not use. Twenty-two examples come with the app. Picking one does not file it away; it follows you to where you write, so you can make it your own first. Tap a question to see it on its own, and write something down if it comes to you. What you wrote keeps the time it was written. Journal and Retrospect now share one place: Records. Both are for looking at what is behind you. Wording across the app got a pass, too, so each place says what it is for instead of counting what it is not.

The developer, SANBUSAE, 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

Privacy practices may vary, for example, based on the features you use or your age. Learn More

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
  • SANBUSAE
Size
  • 34.9 MB
Category
  • Finance
Compatibility
Requires iOS 15.1 or later.
  • iPhone
    Requires iOS 15.1 or later.
  • iPod touch
    Requires iOS 15.1 or later.
  • Mac
    Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
  • English and Korean
Age Rating
4+
Copyright
  • © 2026 SANBUSAE