For people going through cancer treatment

Know when your skin is really changing.

Between Cycles measures your skin against your own baseline, ignores normal photo-to-photo noise, and turns it into one page your care team can act on.

Start my baseline

Photos stay on your phoneNo accountNot a diagnosis

How it works

Patients are told to report any changes. Nobody tells them what counts as one.

  1. 01

    Set your normal

    Three scans before treatment. They also measure how much your scores wobble between photos when nothing has changed.

  2. 02

    Check in, without the guesswork

    Each scan is compared with your own baseline. A change only counts when it's bigger than your own photo-to-photo noise.

  3. 03

    Bring one page

    Changes, charts across cycles, photos and symptoms on a printable page, so “it's been bad, I think” becomes something your team can act on.

Honest about skin tone

Redness is harder to see on deeper skin. Skin type is measured once, and the app says plainly when a reading is less reliable.

Picked for your skin today

Each change maps to what guidance says helps, filled with real products that pass every rule. No ads, no affiliate links.

Is this product okay now?

Snap the ingredient list. AI only reads it; ten fixed rules, each citing patient guidance, decide.

Hair, tracked and previewed

Hair density measured each cycle, and shorter styles or no hair previewed on your own face, before it happens.

For pharmacies and shops

A gentle shelf, on every product page.

The same cited rules audit a whole range, and a two-line embed puts “Gentle during treatment” on the products that pass, with the reason one tap away. Only about 1 in 5 real products we checked does.

Private by design

Nothing to sign up for. Nothing kept on our server.

Photos and history stay on this device. A photo is sent to the skin analysis service only while it is being measured, and nothing is stored on our server. There are no accounts.

Between Cycles tracks visible changes in photos. It does not diagnose, grade or treat anything, and it is not a substitute for your care team. If something worries you, contact them, whatever the app says.