Fitsmith

Build custom running workouts for Apple Watch. Describe your run in natural language and let AI structure it.

Download on the App Store

Describe your run naturally

Just type what you want to do. AI understands your description and automatically structures your running workout with proper warm-ups, intervals, and cool-downs.

  • Natural language processing
  • Intelligent workout structuring
  • Complete watchOS workout support
  • No login required
AI workout text entry
Apple Watch workout sync

Sync to Apple Watch

Your workouts automatically sync to the Workout app on Apple Watch. Start your run with a single tap and let your watch guide you through each interval.

  • Instant sync to Apple Watch
  • Real-time guidance during your run

Schedule workouts

Create your running plan and sync it to Apple Watch. Keep track of your training schedule and stay consistent with your goals.

  • Calendar view of your plan
  • Flexible scheduling
  • Track your progress
Workout schedule calendar
Custom workout builder

Custom run builder

Modify AI-structured workouts or build from scratch. Configure everything watchOS supports: time, distance, and energy goals, plus pace, heart rate, cadence, and power alerts.

  • Full control over every segment
  • Repeating intervals and complex structures
  • All watchOS goals and alerts supported

Ready to start training?

Download Fitsmith and create your first workout in seconds

Download on the App Store