Sign in with Apple is optional — take it if you want it and hide your email, or continue without signing in. Entries are held on the device with SwiftData and sync only to your own private iCloud, so what your nights say about you has no copy at our end.
A daily reminder at the hour you choose, a Siri Shortcut for logging a night without opening anything, CSV export whenever you want the record in your own hands, and a week's chart small enough to read before the coffee lands.
On the App Store
iPhone, iOS 17 and later. Nightshift is free to download; Nightshift Plus is $2.99 a month or $19.99 a year after a 7-day free trial, auto-renewing until you cancel.

