Your scan history
Skin appearance
Appearance metrics are recorded from each scan and followed against your own baseline.
Bring selected sleep, activity, cycle and heart-rate context from your Apple ecosystem. Stella keeps connected context close to your scan history, without treating timing as proof of cause.
Optional · permission-based · availability varies by device, region and connected source
Start with a scan. Connect a platform only when it is useful to you.

Connect from Stella when you choose.These are the main Apple Health records Stella can place beside your skin history. Exact fields depend on the device, source app and permissions you grant.
Duration, time in bed and sleep stages made available to Apple Health by your devices and apps.
Steps, exercise minutes and energy expenditure recorded across your Apple ecosystem.
Menstrual-cycle records you choose to make available through Apple Health or a connected app.
Available resting heart-rate records that can add another dated point of context.
Stella keeps what the camera observes distinct from what a connection provides. You can compare the timing and decide what is worth watching next.
Your scan history
Appearance metrics are recorded from each scan and followed against your own baseline.
Apple Health
A pattern can help you ask a better question. It does not prove that one event caused a change in your skin.
A connection is optional. Review the requested categories before you approve them, and change or remove access later from Stella and the connected platform.
Connections are one optional layer. The scan, routine and notes remain visible as their own sources.
Take a scan first. Add connected context only when it helps you see the dates more clearly.
Try Stella for free. No credit card required.