Track Your Headaches,
Own Your Data
Medical-grade headache tracking with complete privacy. Based on Dutch medical guidelines, designed for people who value their health data.
Everything You Need, Nothing You Don't
Powerful features designed with medical professionals and privacy advocates
100% Private
Your data never leaves your device unless you choose to sync or share it. No accounts, no ads, no third-party trackers.
Quick Logging
Log a headache in seconds with our streamlined interface. Set it up once, use it effortlessly.
Smart Insights
Discover patterns, triggers, and trends with intelligent analysis of your headache data.
Medication Tracking
Track what works and what doesn't. Monitor medication effectiveness and usage patterns.
Weather Correlation
Automatic weather tracking to identify pressure and temperature triggers.
MIDAS Assessment
Built-in Migraine Disability Assessment Score to track impact on daily life.
PDF Reports
Generate detailed reports for your healthcare provider with one tap.
iCloud Sync
Optional encrypted sync between your devices. Your data stays in your iCloud account only.
Simple Yet Powerful
Designed to be easy when you're in pain, comprehensive when you need details
Quick Entry
Log your headache with just a few taps. Add as much or as little detail as you want.
Track Patterns
The app automatically tracks patterns, triggers, and correlations over time.
Get Insights
Discover what triggers your headaches and what treatments work best for you.
Based on Medical Guidelines
Cephalo is designed following Dutch medical guidelines (NHG-Standaard Hoofdpijn) and international best practices for headache tracking.
- Track all relevant symptoms and characteristics
- MIDAS score for disability assessment
- Medication overuse warnings
- Red flag symptom alerts
- Export formats designed for healthcare providers
⚕️ Cephalo is a tracking tool and does not provide medical advice. Always consult with your healthcare provider for diagnosis and treatment.
Privacy That's Real, Not Marketing
We don't just talk about privacy – we built our entire app around it.
🚫 No Account Required
Start using the app immediately. No email, no sign-up, no personal information needed.
📵 Works Fully Offline
The app is fully functional without internet. Your headache data is never uploaded to us — all insights are computed on your device.
🔐 Your Device, Your Data
All data is stored locally on your device. Export, delete, or transfer it anytime you want.
🍎 Optional iCloud Sync
If you choose to sync, data is encrypted and stored only in your personal iCloud account.
Private Federated Learning
Better predictions, learned together — without anyone's diary ever leaving their device. Off by default, entirely optional.
📱 Training stays on your device
If you opt in, your phone briefly trains a small prediction model locally, using your own diary. Your entries, notes, and health data never leave your device.
🎲 Noise before anything is shared
The only thing shared is a short list of numbers describing general patterns — with random statistical noise added first (differential privacy), so your personal patterns can't be reconstructed. A strict monthly privacy budget caps how often a device may contribute.
🔒 Only readable as a group
Every contribution is encrypted so that it can only be decrypted merged with those of many other users (secure aggregation). No one — including us, even in the event of a server breach — can see an individual contribution.
🤝 Everyone gets the model back
The combined result is an improved prediction model that every participant receives in return. You can opt out or delete your local participation data at any time, and the app works exactly the same if you never join.
Trusted by Thousands
Here's what people are saying about Cephalo
"Finally, a headache app that respects privacy! No accounts, no cloud storage unless I want it. Perfect for tracking my migraines."
- Sarah M."The MIDAS assessment and medication tracking features are exactly what my neurologist needed. The PDF export is incredibly detailed."
- Michael R."I love that it tracks weather automatically. Found out barometric pressure changes are my biggest trigger. Game changer!"
- Emma K.Take Control of Your Headaches
Join thousands who are already tracking their headaches with complete privacy
Free to download • No account required • Your data stays yours
Frequently Asked Questions
Is Cephalo really free?
Yes! Tracking, your complete history, and all exports (PDF, CSV) are free — your data is never behind a paywall. Cephalo Plus optionally adds advanced insights like trigger analysis, pattern detection, and risk prediction, available as a subscription or a one-time lifetime unlock.
Do I need to create an account?
No account is required. You can start using the app immediately after downloading it.
Where is my data stored?
Your data is stored locally on your device. If you enable iCloud sync, it's also encrypted and stored in your personal iCloud account.
Can I export my data?
Yes! You can export your data as PDF reports for healthcare providers or as CSV files for your own analysis.
Is it available for Android?
Currently, Cephalo is only available for iOS devices. We're considering an Android version based on demand.
How does weather tracking work?
With your permission, the app uses your location to automatically log weather conditions when you record a headache.
Does Cephalo connect to any servers?
Not for your health data — headache entries stay on your device. The app sends minimal first-party reliability statistics (installs, sessions — never your entries; see the privacy policy), and two optional features use the network: weather lookups (through Apple's WeatherKit) and private federated learning, an opt-in way to improve predictions together with other users that shares only encrypted, anonymous pattern updates.