Log in seconds
Three taps, even mid-attack.
Start an attack with a single tap. Add intensity, side and triggers later — when you actually can. No endless forms.
Dim A quiet diary for migraines. Dim is a migraine tracker and headache diary app for iPhone and Apple Watch.
No accountNo adsNothing sold
Why Dim
Other migraine apps drown you in forms, ads, and insights locked behind a paywall.
Dim does the opposite — log in seconds, keep every byte of your data, and finally see what sets your migraines off.
Easy on the eyes
Built for light sensitivity.
Deep blacks, soft glass, no harsh whites. Dim is made to stay bearable while a migraine is happening.
Private by design
No account. No ads. No selling.
Your migraines live on your device and your private iCloud — and nowhere else.
Apple Health
Two-way Apple Health.
Every attack saves to Apple Health as a headache, and headaches you log elsewhere flow right back into Dim.
For your doctor
A clean report, in one tap.
Export a doctor-ready PDF or CSV of your full history whenever you need it.
Questions
Everything people ask about Dim.
How fast can I log a migraine attack?
Three taps, even mid-attack: start with a single tap, set intensity and side, save. Triggers, medication and notes can wait until you actually feel up to it.
Does Dim track barometric pressure and weather?
Yes. When an attack starts, Dim automatically attaches local weather, temperature and barometric pressure — including whether it's falling — plus last night's sleep from Apple Health. Falling pressure is one of the most common migraine triggers, and Dim lets you see whether it's one of yours.
Can I export a report for my doctor?
Yes. One tap exports a clean, doctor-ready PDF or CSV of your full history — frequency, duration, intensity, medication and triggers — ready for your next neurologist appointment.
Does Dim sync with Apple Health?
Two-way. Attacks you log save to Apple Health as headaches, and headaches logged in other apps flow back into Dim. Everything happens on your device through Apple's HealthKit.
Do I need an account? Is my data private?
No account, ever. Your migraine history lives on your device and, if you enable backup, in your own private iCloud. We have no servers holding your migraine data and cannot see it. No ads, nothing sold.
Is Dim free?
Free to start — logging, calendar and history included. Dim Pro is an optional subscription with a 7-day free trial that unlocks the doctor report, Apple Watch logging, widgets, and insights.
Is Dim a medical device?
No. Dim is a personal diary — it does not diagnose, treat, or prevent any condition. It helps you and your doctor see the full picture. Always consult a qualified clinician about your health.
Start understanding your migraines.
Free to start. No account. Your data stays yours.