How can we help?

Download NightFast from the App Store, take the 60-second quiz and allow notifications so night prompts can reach you. Your night window is set from your answers. You can change it anytime.

An iPhone running iOS 18 or later. NightFast is iPhone-only for now, with no Android, iPad-optimized or Apple Watch version yet.

Open Settings in NightFast and edit your night hours. Night-shift worker? Choose the hours you're actually awake. The window doesn't have to be 10 PM to 6 AM.

On the Nights tab, tap Wait out a craving. You get a 10-minute timer with a breathing circle and small ideas. Most cravings fade. When it ends, tell NightFast how it went. Waited it out? It counts. Still hungry? Log a light bite, with zero judgment.

Yes. Open the Nights tab, tap the day on the calendar, and choose Stayed strong, Had a snack or Clear. Your streak updates instantly.

Widgets: touch and hold your Home Screen or Lock Screen → Edit → Add Widget → NightFast. The Night Streak widget shows your streak and night window.

Siri: say “Hey Siri, I'm craving a snack in NightFast.”

Control Center: swipe down from the top-right, tap +, then Add a Control and choose Wait Out a Craving.

Free: night prompts, Live Activities, craving timer, morning check-in, streaks, the Nights calendar, on-device AI, widgets, Siri, and 20 food logs a day.

Pro: unlimited logging, custom meal schedules, detailed insights, Apple Health sync, grocery lists and Family Sharing.

In the U.S.: $4.99/month, $29.99/year, or $59.99 once for Lifetime. Local prices vary by country and are always shown in the app before you buy.

Open NightFast → Settings → Restore Purchases. Make sure you're signed in with the same Apple ID you bought with.

Apple manages all subscriptions. Open the iPhone Settings app → your name → Subscriptions → NightFast → Cancel Subscription. Or in NightFast, go to Settings → Account → Manage Subscription. Cancel at least 24 hours before renewal. You keep Pro until the period ends.

Refunds are handled by Apple. Request one at reportaproblem.apple.com. If something's wrong with the app, email us too, and we'll try to fix it.

Yes. If Family Sharing is on, eligible Pro purchases can be shared with up to five family members. Each person's data stays on their own iPhone.

1. iPhone Settings → Notifications → NightFast → turn on Allow Notifications, plus Lock Screen and Banners.
2. Check that a Focus mode (like Sleep or Do Not Disturb) isn't silencing NightFast. Add it as an allowed app if you want prompts during Focus.
3. In NightFast, confirm your night window in Settings. Prompts only appear inside it.
4. Open NightFast once after updating iOS so reminders can be rescheduled.

Food search needs an internet connection. If a barcode isn't in the databases, tap Enter manually on the scanner screen, or use Quick Log. Some nutrition values come from community databases and can be off, so check the label when it matters.

NightFast needs camera access to scan. Go to iPhone Settings → NightFast → turn on Camera, then reopen the scanner. You can always enter food manually instead.

Health sync is a Pro feature. Open the Health app → your profile → Apps → NightFast and turn on the categories you want. Then turn on Apple Health in NightFast's Settings.

Update NightFast and iOS, then force-close and reopen the app. Still happening? Send us your iPhone model, iOS version, NightFast version (in Settings) and what you tapped, plus a screenshot if you can. You can also share crash data with developers: iPhone Settings → Privacy & Security → Analytics & Improvements → Share With App Developers.

Yes. Your food log, check-ins and patterns are stored on your iPhone, and the AI runs entirely on device. We don't run ads or sell data. When you search for a food, only the search words or barcode number are sent to food databases. Details are in the Privacy Policy.

Delete the NightFast app to remove its data from your iPhone. To remove a copy in iCloud, go to iPhone Settings → your name → iCloud → Manage Account Storage. To remove nutrition NightFast wrote to Apple Health, use the Health app → Apps → NightFast. Questions? Email us.

No. NightFast is a habit-support and tracking tool, not a medical device. Talk to a healthcare professional before changing your diet. If food or calorie tracking feels stressful, or you're dealing with disordered eating, please reach out to a professional. In the U.S. you can call or text 988.