Everything for a clear picture of your headaches

A diary first, analysis second. Designed to be gentle when you are in pain and thorough when your doctor asks for details.

The complete feature list

  • Log in secondsStart an episode with a couple of taps, even mid-attack. Add detail later, when you feel up to it.
  • Evening check-inA few taps on how the day went; headache-free days count too, and give your patterns their baseline.
  • Insights that explain themselvesTrigger analysis with confidence levels, discovered patterns, and a risk outlook for tomorrow. Every number says where it came from.
  • Medication logRecord what you took, the dose, and when, and see what actually helped.
  • Weather correlationAutomatic weather logging through Apple's WeatherKit helps you spot pressure and temperature patterns.
  • MIDAS assessmentThe standard Migraine Disability Assessment questionnaire, built in and free, to show how headaches affect your daily life.
  • Calendar viewYour month color-coded by intensity, aura included.
  • Doctor-ready exportsA clear PDF report, plus CSV for your own analysis.
  • Clinical guardrailsRed-flag symptom alerts and medication-overuse warnings.
  • Dark mode for photophobiaEvery screen has a full dark variant, with soft accents instead of glaring highlights.
  • Optional iCloud syncEncrypted, in your personal account, off until you turn it on.
  • Private by designNo accounts, no ads, no third-party trackers. Your diary never leaves your device unless you choose to sync or share it.
  • Works fully offlineThe whole diary functions without internet; nothing waits on a server.
  • Your device, your dataExport, delete, or transfer it anytime.

Worth a closer look

MIDAS assessment

The standard Migraine Disability Assessment questionnaire, built in and free, to show how headaches affect your daily life.

Medication log

Record what you took and when. Medication-overuse warnings keep a quiet eye on frequency.

Weather correlation

Automatic weather logging through Apple's WeatherKit helps you spot pressure and temperature patterns.

The app, screen by screen

Cephalo home screen in light mode: a current episode card with intensity, duration, and medication, above a weekly summary and recent episodes
The diary's home: today, this week, and the current episode
Cephalo insights screen: trigger analysis with confidence levels, tomorrow's risk outlook, and discovered patterns
Triggers with confidence levels, and an honest outlook for tomorrow
Cephalo calendar: a month of episodes color-coded by intensity, with aura markers and a monthly overview
Your month at a glance, intensity and aura included
The same Cephalo home screen in dark mode: dimmed surfaces with soft sea-glass accents
The same home screen, gentle in the dark

Start with the free diary

Unlimited logging, your complete history, 7-day insights, MIDAS, and a full JSON backup are free. Cephalo Plus adds personal analysis, longer periods, and PDF and CSV exports.

Free to download • No account required • Your data stays yours