Scan your skin.
A 30-second phone scan follows 23 appearance metrics over time and shows 4 additional characteristics.
Know your skin. Get more from your skincare.
Stella turns 30-second phone scans into a personal skin timeline—showing what changed alongside your routine, sleep, stress and cycle.
Connect Apple Health, Oura, Fitbit and more.
Scan 01 / 29
A real skin record
One face. 29 moments.
Move through Jo's scans to see what a single photo cannot show: change over time.
Scan 01 / 29
- Redness
- 62 79 improving
- Dark circles
- 60 76 improving
- Pigmentation
- 84 79 declining
130+Skin Signals
30sPer Scan
WeeklyReports
Consistent, scan to scan.Adjusts for lighting and camera · 5–8% variation in repeat testing
From one scan to your own skin history.
Scan. Keep the record. Add context. Ask what changed.
Build your history.
Repeated scans show what changed and what stayed steady.
Add the context.
Put your routine, sleep, stress and cycle beside your skin timeline.
Talk to your skin.
Ask what's changing, what's stayed steady and how this period compares with your own history.
Bring in what you choose.
Connect the platforms you already use. Stella places sleep, stress, activity and cycle beside your skin record without treating coincidence as cause.
See compatible wearablesKeep control of the record.
Your scans build a report that belongs to you. Share it with your own dermatologist or skin therapist if you choose — or keep it to yourself.
Stella never sells your personal or biometric data.
Designed to observe, not diagnose.
Every Stella metric starts with one question: can a phone camera measure it consistently enough to follow over time? Stella tracks appearance-level change and leaves medical decisions with you and your clinician.
Dr. Alice Rudd · Dermatologist · Co-founder of Stella
See what Stella measuresWhat people learn from keeping the record.
“I love this app! I've been scanning for a couple of months and it's been really cool to see how my skin responds to different products that I have tried…”
“Awesome app, learning things about my skin that I didn't know about.”
Common questions.
Stella shows 27 metrics across six groups. 23 are followed over time; 4 additional characteristics provide context for each scan.
About 30 seconds. You use your phone camera in good lighting. No special equipment needed.
Stella's scans are designed to be consistent and comparable across sessions, which is more useful than any single "accurate" number. What matters is how your scores move over time, not the absolute value on day one. The more you scan, the more meaningful the data becomes.
Yes. Consistent lighting gives you the most comparable results. Stella works best in natural, even light (like near a window). Scanning in the same spot each time helps your trends stay meaningful. The app will let you know if conditions look off.
Most users scan two to three times per week. The more data Stella has, the more meaningful the patterns it can surface in your weekly reports.
Stella gives you observations about how your skin looks over time. You decide what to do with that information. The agency stays with you.
Stella is free to try. No credit card required to start scanning and tracking your skin.
Your scans are processed to generate your skin scores and stored securely. We never sell your personal or biometric data. Anonymised, aggregated insights may be used to improve Stella's accuracy over time. Nothing that identifies you.
No. Stella makes appearance-level observations about your skin. It does not diagnose, treat, or assess any medical condition. If you have a skin concern, please see a dermatologist or healthcare professional.
Ideas worth keeping in the record.
Before you change the routine, understand the change.
Start with one scan. Keep the record. See what changes before deciding what to change.
Start your skin record →One scan. Thirty seconds. Start whenever you're ready.
Stella provides personalised skincare suggestions based on your skin's appearance. These are appearance-level observations, not therapeutic advice. Stella is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease or medical condition. If you have a skin concern, please consult a healthcare professional.