Formula Log: Hair Color Notes

Salon client notes & backup

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Your client formulas deserve better than an index card box, or an app that logs you out and loses everything. Formula Log is a private client and formula log for colorists. Everything lives on your phone. No account, no login, no server holding your work hostage. DATA THAT STAYS YOURS Formula, toner, processing time, price, and notes -- write it exactly how you'd write it on a card. Back up anytime and restore on a new phone without losing a thing. EVERY CLIENT, A-Z Search by name or formula. See each client's full visit history in one place. BEFORE & AFTER Attach a photo before you start and one when you're done. Drag to compare them side by side, right on the client's card. TODAY'S CLIENTS Open the app and see who's due back, what you earned this month, and your recent formulas. NO SUBSCRIPTION Pay once. Formula Log is yours forever -- no monthly charge, no renewal, no losing access if you stop paying. Export your full client list and formulas to CSV or JSON, anytime. It's your data.

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Your purchase now sticks. If you had paid and the app ever asked you to pay again — offline, or after reinstalling — it will not do that any more. The Backup screen now tells you the truth about where your work is: when it last saved, and if anything is stopping it. Plus a set of fixes to make sure nothing in your book can be removed without you doing it.

Version 1.0.1

The developer, yeonwoo lee, 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.

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

    Accessibility

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

    Information

    Seller
    yeonwoo lee
    Size
    1.7 MB
    Category
    Business
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © 2026 Yeonwoo Lee
  • Privacy Policy

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