Fast: Fasting Timer & Tracker
Body Fat Burner & Weight Loss
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Track your intermittent fasting with a beautiful circular timer that makes every hour count.
SMART FASTING TIMER
Start a fast with one tap. Choose from 5 proven protocols — 16:8, 18:6, 20:4, OMAD, or create your own custom schedule. Watch your progress in real time with a fire-orange ring that fills as you get closer to your goal.
METABOLIC MILESTONES
Follow your body through 6 science-backed fasting phases. From ketosis to autophagy, see exactly what is happening inside as you fast — with each milestone celebrated when you hit it.
COMPREHENSIVE DIARY
Log mood, energy, hunger, sleep, cravings, meals, hydration, and symptoms throughout each session. Spot patterns and understand what helps you complete your fasts.
INTELLIGENT INSIGHTS
An AI-powered engine analyzes your data to find correlations between your habits and fasting success. Get personalized recommendations based on your unique patterns.
STREAKS & ACHIEVEMENTS
Build momentum with daily streaks and unlock achievements as you progress. A 7-day week bar shows your recent history at a glance.
COPING TOOLS
When the hunger hits, guided 4-7-8 breathing exercises, evidence-based hunger management tips, and activity suggestions help you push through.
PRIVACY FIRST
All data stays on your device. No accounts required. No data sold. Your fasting journey is yours alone.
FAST PRO
Unlock advanced analytics and personalized insights with a Fast Pro subscription. Pro members get deeper trend analysis across multiple fasts, expanded milestone breakdowns, and tailored recommendations based on your unique patterns.
• Fast Pro Annual: $29.99 per year
• Includes a 3-day free trial for new subscribers
• Auto-renews yearly at the same price unless cancelled at least 24 hours before the end of the current period
• Manage or cancel anytime in your App Store account settings
Download Fast for free today and take control of your fasting journey. Whether you're starting your first 16:8 fast, building a healthier routine, or just curious about intermittent fasting, Fast is the ultimate intermittent fasting companion. Start, track, and transform your way to a healthier you – one fast at a time!
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Terms of use: https://www.almastreetventures.com/terms
Privacy policy: https://www.almastreetventures.com/privacy
Ratings & Reviews
• Apple Health: two-way weight sync
• New Progress screen: weight and fasts on one chart
• Chart and polish fixes
The developer, Alma Street Ventures, 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 Linked to You
The following data may be collected and linked to your identity:
- Health & Fitness
- Identifiers
- Usage Data
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Alma Street Ventures Ltd
- Size
- 25 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
18+
- 18+
- Infrequent
Medical Treatment information
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Fast Pro Yearly $29.99
- Copyright
- © 2026 Alma Street Ventures