Formula Log: Hair Color Notes

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.