Support

Email support@matterdevelopment.com and we'll answer within two working days. Tell us your iPhone model and the version shown at the bottom of Stillnight's Settings.

Common questions

How does the sleep window work? For the first week you sleep as usual and fill in a 30-second diary each morning. From those nights Stillnight sets a window: a bedtime and a fixed wake time. Each week it can move: 15 minutes wider when you're asleep for most of it, narrower when you're lying awake. It never goes below 5½ hours, or 7 hours if your safety check suggested talking to a doctor.

Do I need an Apple Watch? No. With a Watch or ring in Apple Health, the diary comes pre-filled; without one, you fill in a few times by hand. The program only needs the diary.

What's free? 20 sleep sounds with a timer, the diary and weekly trends, and the Can't sleep basics. Free stays free.

How do I cancel? In Stillnight: Settings → Stillnight Plus. Or in the Settings app: your name → Subscriptions. Cancel at least 24 hours before the renewal date. During the free trial you get a reminder two days before it ends.

How do I restore a purchase? Settings → Restore purchases, signed in with the same Apple Account.

Is this medical care? No. Stillnight uses techniques from CBT-I, a well-studied approach to sleep, as a wellness program. If you have a sleep or health condition, talk to your doctor before changing your sleep.

How do I delete my data? Settings → Delete everything. Your data lives only on your iPhone; see the privacy policy.