Fibromyalgia companion

Cairn

Steady, one day at a time.

A calm, private diary for life with fibromyalgia. Note how you are in a few taps, see where it hurts, keep an eye on your energy, and walk into your next appointment with a clear picture of the last few months.

Coming soon toGoogle Play

Steady, one day at a time

What Cairn does

Made for your worst day

Few taps, nothing to type, and no guilt. Add more on the days you have more to give.

Check in with three taps

Pain from 0 to 10, fatigue and brain fog in big, easy tiles, then save. Add sleep, mood, symptoms and a note when you want to.

Where it hurts

A body map, front and back, with 28 areas to tap and the type of pain. Prefer a list? The same areas are there as a simple list.

Pace your energy

Set your own daily budget, as spoons, points or battery, and log activity and rest in a tap. Cairn never tells you to do more or less.

Flares

Tap "I'm in a flare" from the app, a home-screen widget or Quick Settings. Cairn suggests possible triggers from what you logged, and you choose what to keep.

See your patterns

Trends over 7, 30 and 90 days, and what often came before your harder days in your own data. Observations, not causes.

A report for your GP

A clear report of the last few months to read on screen, or to share or print for your GP or rheumatologist.

Medications & appointments

Keep track of medicines with optional reminders, and plan appointments with questions to take with you.

Learn

Short, plain-English articles on pain, sleep, fog, pacing, flares, and living and working with fibromyalgia, with sources.

Easy on tired eyes

Large text, a calm low-glare look and a switch that turns animations off.

Private by design

Your data never leaves your device.

Everything you record stays on your device, encrypted. No account, no server, no trackers.

Read the Cairn privacy policy

No account, no server

There is nothing to sign up for, and nothing you log is sent to us.

Encrypted on your phone

AES-256 (SQLCipher), with the key held in your phone's secure keystore.

No ads, no trackers

Your health data is never collected, sold or shared. No analytics or advertising SDKs.

Optional app lock

Open Cairn with your fingerprint, face or PIN.

A backup only you can open

Make an encrypted backup with a passphrase only you know, and keep it where you choose.

Delete everything, for good

Permanently erase all your data, whenever you choose.

A steady companion for harder days.

Cairn is in development and coming soon to Google Play, for Android. Features may change before launch.