Cephalo - Headache Diary

Understand your headaches and migraines without giving up your privacy.

Cephalo is a headache and migraine diary that keeps every entry on your iPhone, so you can log an attack in seconds and see what your own patterns are telling you.

Track the moments that matter: when a headache starts and ends, how intense it feels, symptoms like aura, nausea, and sensitivity to light or sound, the medication you took, and the possible triggers around you.

YOUR DATA IS ALWAYS YOURS - FOR FREE
Cephalo's free tier never caps your history. Record as many entries as you like, keep your full timeline, and back up everything to a JSON file you control, anytime. Your diary is yours to own.

CEPHALO PLUS - SEE THE PATTERNS
Upgrade to Plus when you want help making sense of it all:
- Doctor-ready PDF report that summarizes your history in clear counts to bring to your appointment
- Pattern analysis that highlights what often appears before a difficult day
- Highlights of the conditions that have shown up before your harder days in the past
- Pattern and insight summaries across weeks and months
- Weather and barometric-pressure correlation views
- MIDAS disability trends over time
- CSV export for your own spreadsheets

Plus turns your own history into understanding. It helps you spot patterns and prepare for your doctor - it never diagnoses or treats.

JUST NEED A REPORT FOR ONE VISIT?
No subscription required - unlock the doctor-ready PDF report for 14 days with a single purchase, and generate as many reports as you need in that window.

PRIVACY BY DESIGN
- Local-first: your diary lives on your device
- Optional iCloud sync that you control
- Opt-in, on-device private federated learning, so insights improve without your raw data ever leaving your phone
- No ads, no data brokers, no selling your health information

MEDICAL DISCLAIMER
Cephalo is a tracking and record-keeping tool. It does not provide medical advice and is not intended to diagnose, treat, cure, or prevent any condition. Always consult a qualified healthcare professional about your health.

SUBSCRIPTION TERMS
Cephalo Plus is available as a monthly or yearly auto-renewing subscription, or a one-time lifetime purchase. Price and currency depend on your region. The yearly subscription includes a 7-day free trial for new subscribers; you are not charged during the trial, and it converts to a paid yearly subscription unless you cancel at least 24 hours before it ends. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period, and your Apple ID is charged for renewal within 24 hours of the period ending. Manage or cancel anytime in your App Store account settings. The lifetime option is a single purchase with no recurring charge. A one-time 14-day report unlock is also available as a separate purchase that enables doctor-ready PDF report generation for 14 days, with no recurring charge.

Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Track it. Understand it. Keep it private.