Baro is a privacy-first, 100% on-device migraine diary designed specifically for iOS. Developed by iOS developer and UX designer Mathieu Bolard, the application aims to streamline health tracking by enabling users to log migraine attacks with a single tap, minimizing effort and friction during painful episodes.

Unlike traditional health-tracking tools that upload sensitive personal details to external servers, Baro keeps all data stored locally on your device. The app functions without account creation, requires no registration, and excludes all third-party tracking SDKs. This privacy-focused approach is officially recognized on the Apple App Store with the privacy label "Data Not Collected."

Beyond episode logging, Baro offers on-device statistical analytics to help users understand potential migraine triggers. It analyzes environmental and physical variables—such as falling barometric pressure, short sleep, and humidity levels—presenting identifiable triggers alongside supporting evidence entirely on your phone.

Pros of Baro

100% on-device processing ensures complete data privacy
One-tap logging enables rapid recording during painful migraine attacks
No account setup or third-party SDKs required
On-device statistics identify triggers like short sleep and pressure changes with evidence
Verified 'Data Not Collected' Apple App Store privacy label

Cons of Baro

Only available on iOS (no Android or web versions)
Lacks cloud syncing and remote backups due to strict local data storage

Frequently Asked Questions

How does Baro protect my health data?

Baro stores 100% of your data locally on your device. It requires no user account registration and includes zero third-party tracking SDKs, earning the official App Store label 'Data Not Collected'.

What triggers can Baro detect?

Using on-device statistics, Baro analyzes physical and environmental factors such as short sleep, falling barometric pressure, and humidity to highlight triggers alongside supporting evidence.