Daily selfie check-ins with AI-powered visual skin notes, trends, and side-by-side comparisons.
ⓘ Visual observations only — not medical advice.
Start tracking your skin in three simple steps.
Take a photo with the front camera guided by a face overlay. The quality bar ensures the best results.
AI analyzes your photo and generates visual observations with confidence-level labels.
See how your skin changes over time with calendar, compare, and weekly wrap views.
Everything you need to track your skin journey.
Your monthly check-in history at a glance with color-coded indicators.
Select two dates and see changes and trend directions.
Get personalized AI coaching insights every week.
Create share cards with your face hidden by default.
No sign-up or login. Anonymous session tied to your device.
Permanently delete all your data with a single tap.



Designed to protect your data.
Guest mode — no sign-up or login required
Photos used for analysis and diary history only
Face hidden by default in share cards
Delete all data anytime
No ads, no third-party tracking
No facial recognition or biometric processing
No. Skin Diary is not a medical device. It provides visual observations for informational purposes only. Please consult a healthcare professional for medical concerns.
Your data is securely processed and stored on Google Cloud servers in the Europe (EU) region.
Yes. Go to Profile > Privacy & Data and delete all your data permanently with a single tap. Deletion completes within 14 days.
No. The app works in guest mode with no email or password required. Your session is tied to your device.
Currently iOS (iPhone) is supported. A front-facing camera is required.
Yes, the app is free to use.