ByteFast
Fasting Timmer & Tracker
Free
New Apple watch app for easier control and keep an eye on the timer
ByteFast is a premium, minimal fasting companion designed to help you reach your metabolic health goals with precision and style. Whether you're a beginner or an experienced faster, ByteFast provides the tools you need to stay consistent and informed.
Key Features:
Proactive Fasting Coach: Real-time insights into your body's metabolic phases—from feeding and transition to fat burning and autophagy.
Live Activities & Dynamic Island: Track your progress directly from your Lock Screen or Dynamic Island without ever opening the app.
Interactive Home Screen Widgets: Stay motivated with beautiful ring views and a 14-day activity heatmap that visualizes your consistency.
Seamless iCloud Sync: Your fasting data is securely backed up and synced across all your devices automatically.
Flexible Scheduling: Choose from proven presets like 16:8 and OMAD, or create custom fasting windows that fit your lifestyle.
Premium Haptics: Feel your progress with carefully tuned haptic feedback for milestones and goal completion.
Take control of your health with ByteFast—the fast, smart, and beautiful way to track your intermittent fasting journey.
Ratings & Reviews
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ByteFast V1.5
What's New
Apple Watch App — Start, track, and end fasts from your wrist.
- Circular progress ring with elapsed/remaining timer (tap to toggle)
- Quick-start presets: 16h, 18h, 20h, 24h with simple up/down selector
- Full-width red END FAST button always visible during active fast
- End-zone nudge: when you're within 15 minutes of your goal, a confirmation dialog asks "Only X minutes left — are you sure?"
- Feeling picker after ending near goal (Great, Strong, Tired, Focused, Neutral)
- Timer keeps counting past your goal — you decide when to end
Seamless Watch↔iPhone Sync
- Start or end a fast from either device; the other picks it up instantly
- Watch communicates via WCSession + shared App Group (works reliably on simulators and devices)
Improved End-Fast Flow (iPhone)
- End-zone nudge confirmation when ≤15 min from goal
- Feeling picker sheet when within 1hr of goal
- Early-break reason picker (Social Event, Felt Dizzy, Hungry, Other + custom)
- 4-hour minimum rule: sessions under 4 hours are automatically discarded
The developer, ByteSeed, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- BYTESEED LLC
- Size
- 6.4 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Apple Watch
Requires watchOS 11.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 ByteSeed
