Runfa.st
Personal Coach & Race Plans
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Runfa.st turns your run history into race-day results. Import your runs, set a target, get AI coaching, follow weekly plan to chase PBs and compete with friends!
Runfa.st is the personal AI running coach that actually understands your data.
Stop relying on generic, static training plans that don't adapt to your fitness level. Runfa.st analyzes your real training history to build dynamic weekly plans and give you actionable, specific advice tailored to your exact goals.
Whether you’re chasing your first 5K, aiming for a sub-1:30 half marathon, or hunting down a marathon PB, Runfa.st replaces the guesswork with data-driven guidance so you can improve with purpose.
Key Features:
• Dynamic Weekly Plans: Get a tailored day-by-day schedule featuring easy runs, intervals, tempo efforts, and long runs—each with the exact target paces you need to hit your goal.
• Hyper-Personalized AI Coach: Chat with an AI that knows your actual running stats. Ask how to adjust your pace, what you're missing in your training, or why a run felt hard—and get highly specific, data-backed answers.
• Seamless Apple Health Sync: Instantly import your Apple Fitness workouts (including Strava runs synced to Apple Health) so your coach and plans are always up to date.
• Race Targeting: Set your event date, distance, and goal time. See exactly how many days are left and track your average paces to ensure you're on track for race day.
• Target-Specific Threads: Training for multiple races? Keep your coaching chats organized by specific targets so the context never gets lost.
• Minimalist, Distraction-Free Design: A beautifully bold, dark-mode interface built to keep you focused on what matters—your training, your progress, and your next run.
Runfa.st requires an active subscription to access all features including AI coaching, personalised weekly training plans, race target tracking, run imports, and stats analysis. Subscription plans are available on a weekly or monthly basis. Payment is charged to your Apple ID account at confirmation of purchase. Subscription automatically renews unless cancelled at least 24 hours before the end of the current period. AI coaching includes a monthly usage allowance that resets automatically. No additional purchases are available or required.
Terms of Use: https://www.tapable.app/runfast/terms
Privacy Policy: https://www.tapable.app/runfast/privacy
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
UI/UX improvements.
The developer, Jan Zarcky, 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
- Purchases
- Location
- Contact Info
- User Content
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Jan Zarcky
- Size
- 20.6 MB
- Category
- Health & Fitness
- Compatibility
Requires iOS 26.0 or later.
- iPhone
Requires iOS 26.0 or later. - Mac
Requires macOS 26.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 26.0 or later.
- iPhone
- Location
- This app may use your location even when it isn’t open, which can decrease device battery life.
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Profanity or Crude Humor
Contains
Health or Wellness Topics
- In-App Purchases
Yes
- Runfast Monthly Subscription $9.99
- Runfast Weekly Subscription $4.99
- Copyright
- © 2026 Jan Zarcky