Formula Book: Hair Color Notes
Ho Van Dai Business iPhoneiPadiPod touch
Formula Book: Hair Color Notes is a free Business app for iPhone and iPad by Ho Van Dai. Requires iOS 17.0. Updated October 24, 2026.
- Price
- Free
- on the App Store
- Size
- 11 MB
- Age 4+
- Updated
- Oct 24
- 2026 · v1.5.1
Screenshots
About Formula Book: Hair Color Notes
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/
What’s new
Version 1.5.1 · Updated October 24, 2026
Bug fixes and stability improvements.
App privacy
The developer, Ho Van Dai, reported these privacy practices to Apple.
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Purchases: Purchase History
- Identifiers: Device ID
- Usage Data: Product Interaction
- Diagnostics: Crash Data, Performance Data, Other Diagnostic Data
Used for: Analytics
Alternatives to Formula Book: Hair Color Notes
Looking for apps like Formula Book: Hair Color Notes? Here are 6 similar apps on the App Store.
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Tonebook: Hair Color Formulas
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Formula Log: Hair Color Notes
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StrandNotes: Hair Formulas
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Formula Cards
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HueBook: Hair Color Formulas
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NoteHair
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Formula Book: Hair Color Notes | – | Free | October 24, 2026 | |
| Tonebook: Hair Color Formulas | – | Free | Oct 31, 2026 | Compare |
| Formula Log: Hair Color Notes | – | Free | Sep 4, 2026 | Compare |
| StrandNotes: Hair Formulas | – | Free | Oct 21, 2026 | Compare |
| Formula Cards | – | Free | May 20, 2026 | Compare |
| HueBook: Hair Color Formulas | – | Free | Jun 23, 2026 | Compare |
| NoteHair | – | Free | Sep 12, 2025 | Compare |