Best Fartlek Apps

67+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated September 2026

With an average user rating of 4.5β˜…, the fartlek category is one of the App Store's strongest. Browse all 67+ apps we track, sorted so the most loved ones surface first.

Compare top Fartlek Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Fartlek Interval TrainerFartlek Interval TrainerFreeβ€”NoYesSep 2026
2Intervals Pro: HIIT TimerIntervals Pro: HIIT TimerFree4.8β˜… (14K)NoYesSep 2026
3RUN interval - Running TimerRUN interval - Running TimerFree4.7β˜… (1K)NoYesSep 2026
4Fartlek: AI Running IntervalsFartlek: AI Running IntervalsFreeβ€”NoYesJul 2026
5Coach Fartlek: AI Run CoachCoach Fartlek: AI Run CoachFreeβ€”NoYesSep 2026
6Interval TimerInterval TimerFree4.7β˜… (3.5K)NoYesSep 2026
7DočesnΓ‘DočesnΓ‘Freeβ€”NoNoSep 2026
8Interval Runner BasicInterval Runner BasicFree5.0β˜… (4)NoNoMay 2026

Top Picks for Fartlek

Fartlek Interval Trainer#1

Fartlek Interval Trainer by Richard English

Get insights into your workout
0.0(0 ratings)
FreeIn-App Purchases
Fartlek Interval Trainer screenshot 1
Fartlek Interval Trainer screenshot 2
Fartlek Interval Trainer screenshot 3
Fartlek Interval Trainer screenshot 4
Fartlek Interval Trainer screenshot 5
Fartlek Interval Trainer screenshot 6

This running app automatically detects spontaneous intervals during Fartlek runs, providing live color-coded feedback on your effort. It also functions as a powerful timer for structured workouts like HIIT and Tabata, offering detailed metrics and syncing with Strava and Apple Health.

Intervals Pro: HIIT Timer#2

Intervals Pro: HIIT Timer by Intervals, LLC

Running & Fitness Workouts
4.8😊(14K ratings)
FreeIn-App Purchases
Intervals Pro: HIIT Timer screenshot 1
Intervals Pro: HIIT Timer screenshot 2
Intervals Pro: HIIT Timer screenshot 3
Intervals Pro: HIIT Timer screenshot 4
Intervals Pro: HIIT Timer screenshot 5
Intervals Pro: HIIT Timer screenshot 6

Create and follow custom interval training routines for various fitness activities. This app offers extensive customization for intervals, alerts, and goals, with seamless integration for Apple Watch and Apple Health.

What We Love

  • πŸ‘ Customizable timers and intervals
  • πŸš€ Seamless Apple Watch integration
  • πŸ’ͺ Helps with fitness goals and training
  • πŸ” Detailed workout tracking and analytics
  • 🎨 Intuitive and user-friendly interface
  • πŸ’» Responsive and helpful developer support

Room to Improve

  • πŸ› Occasional sync and connectivity issues
  • πŸ” Lack of clear guidance and documentation
  • πŸ’° Paid version required for full functionality

More Fartlek apps to explore

FAQ about Fartlek

Are there free fartlek apps for iPhone?
Yes β€” 20 of the top fartlek apps we rank are free to download, including Fartlek Interval Trainer and Intervals Pro: HIIT Timer.
Fartlek Interval Trainer has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 67+ fartlek apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
Fartlek Interval Trainer is a running app designed to automatically detect spontaneous intervals during Fartlek runs and provide structured workout timing for HIIT and Tabata. It offers live feedback and detailed metrics.
Fartlek Interval Trainer is available for both iPhone and Apple Watch, allowing for seamless tracking and training on your preferred devices.

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