Isobar
Feel the weather turning?
Isobar shows how hard the air pressure swings today and in the days ahead. Your headache diary shows whether your headaches follow it.
Coming soon to the App Store
Today's swing
Every day gets one clear level from its largest pressure change within 24 hours, so the small daily ebb of the air never reads as weather.
See it coming
A smooth pressure curve for the days ahead with the strongest changes marked, a morning alert on days that swing, and with Plus a heads-up the evening before.
Your headache diary
One tap a day. After two weeks Isobar Plus compares how often you logged headaches at each swing level, and on falling against rising days. With Plus, share a clear report with your doctor.
iPhone, Apple Watch, widgets
A free Home Screen and diary widget, a watch app, Control Center and Siri. With Plus, every widget, Lock Screen widgets and complications.
Private by design
No account, no ads, no tracking. We never receive your diary. Pressure comes from Apple Weather.
In your language
English, Deutsch, Türkçe, 日本語, 한국어, 简体中文, 繁體中文, Français, Español, Italiano, Nederlands, Português, Polski and Svenska.