ColorMargin: Hair Color Cost

ColorMargin is a private, on-device service economics tool for independent hair colorists, booth renters, and solo stylists who buy their own products and set their own prices. Record the products and actual grams used in a color service. ColorMargin calculates the material cost from your landed package costs, then shows an estimated contribution after the discount, direct supplies, card-fee estimate, and labor allowance you choose. BUILT FOR THE MONEY DECISION AFTER THE MIX • Save a personal product price book with package cost and mass in grams • Record every product actually used, including discarded remainder • See material cost, labor allowance, card fee, contribution margin, and target price • Freeze historical product costs and assumptions inside each saved service • Duplicate a prior service without changing its original record • Export complete JSON backups and readable CSV service history • Restore a ColorMargin JSON backup with an explicit replacement confirmation PRIVATE BY DESIGN No account. No developer cloud. No advertising or third-party analytics. Products, optional local aliases, formula labels, and service records stay on your device unless you explicitly export them with Apple’s system share sheet. TRY THE COMPLETE WORKFLOW Free access includes up to 20 active products, 3 local aliases, and 5 completed service records. Existing records always remain readable and exportable. A one-time ColorMargin Lifetime purchase unlocks unlimited products, aliases, and service records—without a subscription. PROFESSIONAL BOUNDARY ColorMargin records costs for amounts entered by a professional. It does not recommend color, developer strength, ratios, processing time, substitutions, or chemical treatment. Follow each manufacturer’s instructions and your professional judgment. Estimated contribution is a planning result, not accounting profit, tax advice, or a guarantee. Version 1 uses US dollars and product mass in grams; it does not convert volume to mass.