Install Steady on your iPhone
Open this app from its HTTPS web address to enable offline use.
In Safari, tap Share → Add to Home Screen → turn on Open as Web App → Add. Open the new Steady icon before you start logging.
Workouts, saved foods, and manual food entries work offline after the app has finished downloading. Food searches need internet.
Your journal is saved on this device. In Your plan, export a backup to Files or iCloud Drive regularly. If you move from the browser to the Home Screen app, import your backup if your logs aren’t there.