A place of their own.
Photos are saved inside Hairline by default, away from your everyday camera roll. No account to create. No cloud sync.
HAIRLINE · PERSONAL PHOTO LOG
Your hairline.
Your private record.
Take photos in similar conditions and compare them over time. A personal iPhone photo log, made for you.
One-time purchaseAll features included. No subscription.
Coming soon to the App Store · iOS 18+ · 6 languages
Planned price in Japan: ¥500. Local prices vary by region.
Privacy when you open it.
Enable App Lock with Face ID, Touch ID or your device passcode. Authenticate when opening the app and when returning from the background.
Share only what you choose.
Export a selected photo from your timeline to Apple Photos. Your original photo stays in Hairline.
SAME CONDITIONS. YOUR OWN PACE.
Keep it consistent.
Take your time.
Use your baseline as an overlay and check position, angle, distance and brightness. A total match of 85% or more shows OK. You can take a photo at any score.
Compare two large photos or four together. Use a shared zoom level and hide the controls for a closer look.
A few things to know
- Photos and measurements are processed on your device. No ads, tracking or third-party analytics SDKs.
- In-app records are excluded from device backups and cannot be recovered after deleting the app or losing your device. Export any photos you want to keep elsewhere.
- Exported copies are outside App Lock and follow your Photos settings, including iCloud Photos.
- Match scores are a guide to shooting conditions. Hairline does not assess hair health, diagnose conditions or evaluate treatment results.