Formula Book: Hair Color Notes
Salon & stylist client cards
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Every client, every formula, one tap away while your gloves are still on.
Keep a card for each client: the color formula from last time, the before and after photos, the allergy flag and patch test dates, the price you charged, the note you left yourself for next visit. Saved on your phone. Backed up to files you own.
Built for independent stylists and colorists who rent a chair or a suite. No booking calendar, no marketplace, no monthly fee for features you already have elsewhere. Just the record of your work, findable in two seconds when a client sits down.
WHAT'S INSIDE
• Client cards with name, phone, tags, allergy flag and patch test history, and every visit underneath
• Formulas written the way you mix them, bowl by bowl: brand, shade, grams, developer, ratio, timing, zone. Or type a bowl free-hand when a form does not fit
• Shade catalog for the major professional color lines, built in. Add your own shades
• Before and after photos on every visit, side by side
• Repeat last visit: copy the previous formula and services, then change only what changed
• Saved formulas: your go-to toners and root mixes, ready for any client
• Bring clients over from Contacts or a CSV file
• Before and after photos as one shareable image
• Face ID lock
BACKUPS YOU KEEP
Automatic snapshots go to your own iCloud Drive. Export everything as one file whenever you like, and restore it on a new iPhone. Backup, export and import are never behind a paywall.
WORKS OFFLINE
No account, no server, no one else holding your book. Everything stays on your phone.
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.
Interface refinements and small bug fixes.
The developer, Ho Van Dai, 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:
- Purchases
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Ho Van Dai
- Size
- 11 MB
- Category
- Business
- 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 12 more
- English, Dutch, French, German, Italian, Japanese, Korean, Portuguese, Russian, Simplified Chinese, Spanish, Traditional Chinese, Vietnamese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Formula Book Premium Monthly $0.99
- Formula Book Premium Yearly $9.99
- Formula Book Premium $34.99
- Copyright
- © DHs 2026