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Targets are effective-dated. Setting a target on a day applies from that day onward; earlier days keep the target they had. Days before your very first target use that first target.

It writes one water and one salt target for each of the seven days before your show. Days already in the past are skipped. You can edit every number before applying and change any day afterwards.

Linearly across your reminder window (Settings → Day starts / Day ends). At the midpoint of the window you should be at half of the day’s target. Cards, widgets and the Mac menu bar all show the same line.

Reminders only fire when you would be behind pace at that slot, only between your start and end hour, and only for today and tomorrow. They are recomputed every time you log or open the app. Check that notifications are allowed in iOS Settings.

Storage is always grams of salt. In Settings you can display and enter sodium in milligrams instead; the app converts using 1 g salt = 400 mg sodium.

Widgets refresh right after every log. If one looks stale, open the app once; iOS occasionally throttles widget reloads.

Open Control Center, tap the + in the top left, choose Add a Control and search for Peak Week (iOS 18 or later).

“Add 500 ml of water in Peak Week”, “Add 2 grams of salt in Peak Week”, or “What’s my Peak Week status”. The same actions are available in the Shortcuts app.

Make sure both devices are signed in to the same Apple Account with iCloud Drive enabled, and that sync is switched on in Peak Week’s settings on both. Changes on one device arrive on the other within seconds while the app is open, or on the next launch.

Tap the share button on the Today screen. You can copy the day or the week as text, or share it as an image or PDF card.