What is stored, and where
- Load readings and their history for the last hour — only on your Mac, so the widgets can draw their charts.
- Settings — in the same place.
What goes over the network
- Update check — at launch and every six hours the app downloads a small file with the latest version number from this site. Like any web request, it contains your IP address and the app version — nothing else.
- “Thank you” page — after installation or an update the app opens it once in your browser; from there the website’s rules apply.
- Links to the site from the menu are tagged with the app’s name, so I can see where a visit came from. They contain nothing about you or your Mac.
What the app doesn’t do
It doesn’t collect usage statistics, doesn’t send crash reports, doesn’t show ads and doesn’t require an account.
Changes
- October 4, 2026 — first version of this page.