Answers to common questions, technical troubleshooting, and direct developer communication.
From the iOS app, tap the central circular button to start. When you're ready to break your fast, tap "End Fast" and optionally rate your mood or notes. You can also start/end fasts with one tap from the Apple Watch app or the iOS 18 Control Center toggle.
Connect your iPhone to a MagSafe or Qi charger and place it horizontally (landscape). Swipe through your StandBy widgets until you reach the widget editor, tap the '+' icon, and select Solstice. You'll now have an ambient, glowing metabolic timer while you sleep.
Touch and hold your Apple Watch face, tap Edit, swipe to the complications screen, tap a complication slot, and scroll to select Solstice. Solstice supports circular, corner, rectangular, and inline complications.
Open Settings > Protocol & Schedule. Choose any standard preset (14:10, 16:8, 18:6, 20:4, 23:1 OMAD) or drag the 24-hour circular dial wheel to set any custom duration up to 72 hours.
All data is stored exclusively on your device in Apple Core Data. Solstice does not use remote cloud servers, accounts, or third-party analytics trackers.
We are actively developing Solstice AI for "The Feeding Window" (photo-to-macros meal scanning, break-fast digestion scoring, and smart food journaling). Join the VIP Beta Waitlist on the homepage to be the first to test it.
Have a question that isn't answered here or discovered a bug? We respond promptly to all messages.