Compare software

Headi - Your headache diary vs Megrim: Migraine Log: catalog facts
Headi - Your headache diary	Megrim: Migraine Log
Free Free and open source under the MIT license.	Free Free and open source under GPL-3.0.
Android	Android, iOS
Keeps records locally Exports logs as CSV or PDF	No accounts, server or telemetry Automatic weather, pressure and astronomical context
Android only	Young project with a small user base Correlations are descriptive, not medical advice
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 8, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.