Nistis: Fasting Timer
Simple 16:8 & OMAD Tracker
About
This app helps you track fasting periods with customizable timers and editing capabilities. It offers a free version with core features and an optional one-time purchase for advanced functionalities like Apple Watch integration and health syncing.
What's New in Nistis
1.1.3
October 24, 2026
Small things that make the first day better. • The intro's Start fasting button now starts your first fast. Not ready? Tap Not now. • Ended a fast by mistake within a minute? Discard it instead of keeping a 0-minute record. • Back-dating a start is quicker: a Last night 8:00 PM shortcut, and the +15m and +1h buttons step aside when they would land in the future. • Entries dated before Nistis existed are kept out of your streak and shown under Needs review, where you can delete them. History recovery, Undo and conflict review from 1.1.2 are unchanged.
MoreSubscriptions & In-App Purchases
Pro Monthly
All Pro features, billed monthly.
Developer apps
FAQ
What is Nistis?
Nistis is a fasting timer app designed to help users track their intermittent fasting periods. It offers customizable timers, the ability to edit past fasts, and a simple timeline of fasting stages. The app prioritizes user privacy with no account required and offline functionality.
Does Nistis have ads?
No, Nistis is completely ad-free. The developers emphasize a clean user experience without advertisements, even in the free version of the app.
What are the Nistis Pro features?
Nistis Pro offers advanced features such as an Apple Watch app with complications, Live Activity and Dynamic Island integration, all widget styles, Apple Health sync for weight and water, advanced statistics, and the ability to import from other fasting apps. These features are available through a one-time purchase.
How much does Nistis Pro cost?
Nistis Pro can be purchased for a one-time fee of $29.99, offering lifetime access to all Pro features. Subscription options are also available at $2.99 per month or $14.99 per year, with the annual plan including a 7-day free trial.
Can I edit my fasting history in Nistis?
Yes, Nistis allows you to edit any fast and any field in your history at any time, including correcting mistakes or logging forgotten fasts. Your streaks and statistics will automatically recompute after any edits.
Is Nistis available on Apple Watch?
Yes, Nistis offers an Apple Watch app as part of its Pro features. This allows you to start and end your fasts directly from your wrist, with complications providing quick access to your fasting status.
How does Nistis handle user data privacy?
Nistis is designed with privacy in mind. It requires no account, works offline, and any optional iCloud sync uses your private iCloud, which the developers cannot access. The app does not use tracking SDKs, and its privacy label on the App Store is highlighted as a key feature.
What fasting presets does Nistis offer?
Nistis provides several preset fasting schedules, including 16:8, 18:6, 20:4, OMAD (One Meal A Day), and 5:2. Users can also set custom fasting durations to suit their individual needs.
