ReHair

Overview

ReHair gives people following a hair-care routine a consistent record to look back on: what they did, when they did it, and photos they can compare. It brings daily reminders and monthly photo check-ins into one app. Built privacy-first with strictly on-device storage, Adapty subscriptions, and PostHog analytics.

How it works

1. Start with Day 0

   Take a baseline set of four photos: hairline, left temple, right temple and crown. Repeat the same zones every 30 days, using consistent framing.

2. Keep the routine manageable

   Set a schedule, receive local reminders and mark actions as done or skipped. A calendar keeps appointments and other events alongside the daily routine.

3. Compare, then look closer

   Choose two dates and one zone to compare side by side or with a slider. A library of educational guides provides context on hair care and tracking.

Architecture & Tech Stack

Routines, events and photos stay on the device, with no account or cloud sync. The product helps people keep a record of their chosen care; it does not diagnose conditions or automatically interpret photos.

Mobile

Expo · React Native · TypeScript

Storage

SQLite · On-device photo storage

State & Monetization

Zustand · Adapty · PostHog

Website

Next.js