Home › Health & Fitness
US
1 of 1 storefronts
Content in en-US
Content in en-US
Information
Apple ID1537547685
Bundle IDwimbledonappcompany.com.FIT
SellerSeller
Min iOS26.0
Min macOS26.0
Device familieswatch, iphone
Released2020-11-08
Copyright© 2026 Richard English
Privacy policyLink ↗
Preview 2 platforms
iPhone 7 images
Apple Watch 6 images
What’s New Version 2.7
Minor fixes and performance improvements.
Description
Run faster and train smarter with the original Fartlek auto-detect interval training app. Built by runners for runners. For both Apple Watch and iPhone.
Train with classic intervals, HIIT, Tabata and Fartlek in one powerful running app.
More than just a simple timer. Switch to Fartlek mode and let FiT detect your speed, automatically converting your run into structured intervals.
No reaching for your device.
No pressing buttons.
Just automatic recording of your activity.
FiT displays your progress live, with color-coded feedback showing how hard you’re running and when you’re recovering. The beautiful Dual Progress Ring shows progress for the current interval and the overall workout, keeping you motivated throughout.
Analyze every interval with detailed pace, heart rate, cadence and distance metrics.
Share your runs with friends with full syncing to Strava and Apple Health.
Key features:
Auto-detection of spontaneous intervals in Fartlek mode
Live color-coded effort feedback
Powerful interval timer for structured workouts
Detailed interval metrics and analysis
Integrated with Strava and Apple Health
NEW! Advanced effort levels automatically detect sprint, hard, moderate and easy effort during your run.
Run free.
Train smart.
Let the app do the rest.
Happy fartlekking!
Subscription Terms
FiT offers an optional auto-renewable subscription. Payment will be charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. You can manage or cancel your subscription at any time in your Apple ID account settings.
Terms of Use:
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy:
https://www.iubenda.com/privacy-policy/39192677
Capabilities
In-App Purchases
Accessibility
ipadiphonemacrealityDevicetvoswatch
Version history 24 versions
Build 887548829v2.72026-07-06 20:39:15
Minor fixes and performance improvements.
Build 886944747v2.62026-06-21 23:08:28
Discover more about every workout with the new Metrics chart.
See your pace, heart rate and cadence displayed alongside your intervals to better understand how your performance evolved during each session. Zoom in, pan across your workout and switch to full-screen mode for detailed analysis.
We've also polished workout summaries and included further bug fixes and reliability improvements.
Build 886534830v2.52026-06-09 06:49:22
Version 2.5 introduces workout analysis charts, with new visualizations showing your target and actual performance for each interval.
Improved workout summaries provide cleaner, more informative workout reviews with key metrics highlighted.
Additional bug fixes and improvements enhance performance and reliability.
Build 886068581v2.42026-06-02 08:08:06
Version 2.4 introduces advanced pace bands for interval workouts.
Structured interval sessions can now use pace bands such as easy, moderate, hard and sprint, giving you a clearer way to plan, follow and review your efforts.
Whether you are building a gentle progression run, a hard interval session or a mixed-effort workout, intervals can now reflect the way you actually train — not just simple work and rest blocks.
This update also includes workout list layout refinements, improved alerts, minor fixes and performance improvements.
Build 885464253v2.32026-05-13 20:32:16
Version 2.3 includes major upgrades to pace band tracking and alerts.
You can now use advanced pace bands in fartlek workouts, helping you track efforts such as easy, moderate, hard and sprint instead of just simple run/walk changes. Available in Pro mode only.
Workout alerts have also been improved, with spoken and haptic cues for pace bands, interval pace, cadence, heart rate, distance splits and time alerts.
Also includes other minor fixes and performance improvements.
Build 884776364v2.2.22026-04-22 06:49:07
Minor fixes and performance improvements.
Build 884664008v2.2.12026-04-19 19:17:06
Minor fixes and performance improvements.
Build 884513749v2.22026-04-16 22:10:15
NEW! Pace Alerts are here.
FiT can now alert you when you drift above or below your target pace, with sound, haptic and on-screen feedback to help you stay on track during workouts.
Available in FiT Pro now.
Build 884167874v2.1.42026-04-06 08:02:32
NEW! Share your workout with friends. Tap the Share icon on your completed workout screen to share your workout details via WhatsApp, iMessage, email and more.
Build 883719462v2.1.32026-03-25 16:36:03
Minor cosmetic enhancements and bug fixes.
Build 883595864v2.1.22026-03-21 08:23:17
Version 2.1.2
Minor cosmetic enhancements and bug fixes.
Build 883558551v2.1.12026-03-20 07:53:10
Version 2.1.1
Bug fixes and performance improvements.
Version 2.1
NEW! Strava Integration
Sync your runs seamlessly.
NEW! Advanced Effort Levels
Automatic effort detection.
NEW! Skip to Next Interval
Build 883390114v2.12026-03-19 07:53:35
NEW! Strava Integration
Share your runs more easily and keep your training connected with seamless syncing to Strava. Simply connect your Strava account in the Settings page. Automatic syncing available.
NEW! Advanced Effort Levels
FiT now automatically detects when you’re sprinting, cruising or recovering, giving you deeper insight into how hard you’re working during every run.
NEW! Skip to Next Interval
Need to move on quickly? You can now jump straight to the next interval during a workout.
Build 882493116v2.0.32026-02-16 07:30:26
Version 2.0.3
Fixed an issue where navigating back during a workout on iPhone caused loss of the tab bar.
Version 2.0.2
New! Added support for music and other audio during workouts.
Version 2.0.1
New! Ability to search and sort previous workouts added.
Version 2.0.0
Completely rebuilt for 2026.
• Brand-new Liquid Glass interface across iPhone and Apple Watch
• New Dual Ring Progress View showing interval and workout progress at a glance
• Live, colour-coded interval feedback while you run
• All-new workout history with full per-interval health metrics
• A redesigned interval engine for more accurate auto-detection and recording
Build 882385931v2.0.22026-02-13 20:46:20
Version 2.0.2
New! Added support for music and other audio during workouts.
Version 2.0.1
New! Ability to search and sort previous workouts added.
Version 2.0.0
Completely rebuilt for 2026.
• Brand-new Liquid Glass interface across iPhone and Apple Watch
• New Dual Ring Progress View showing interval and workout progress at a glance
• Live, colour-coded interval feedback while you run
• All-new workout history with full per-interval health metrics
• A redesigned interval engine for more accurate auto-detection and recording
Build 882270475v2.0.12026-02-10 06:05:18
Version 2.0.1
Ability to search and sort previous workouts added.
Version 2.0.0
Completely rebuilt for 2026.
• Brand-new Liquid Glass interface across iPhone and Apple Watch
• New Dual Ring Progress View showing interval and workout progress at a glance
• Live, colour-coded interval feedback while you run
• All-new workout history with full per-interval health metrics
• A redesigned interval engine for more accurate auto-detection and recording
Build 881720398v2.0.02026-02-03 02:31:26
Completely rebuilt for 2026.
• Brand-new Liquid Glass interface across iPhone and Apple Watch
• New Dual Ring Progress View showing interval and workout progress at a glance
• Live, colour-coded interval feedback while you run
• All-new workout history with full per-interval health metrics
• A redesigned interval engine for more accurate auto-detection and recording
Build 840855870v1.2.12021-03-12 20:30:11
Fixed bug with ads not being removed when in-app purchase bought
Build 840269850v1.2.02021-01-30 15:20:32
NEW LANGUAGES ADDED. FiT now supports the following languages:
• English
• French
• Spanish
• Welsh
New pace metrics added:
• minutes per km
• minutes per mile
Bug fixes and performance improvements.
Build 839957935v1.1.12021-01-09 17:45:21
1.1 : NEW for 2021:
• Manual interval tracking added with 5 different routine types
• Imperial measurements added
Manual Interval Tracking added!
In addition to Auto Detect mode, FiT now includes 5 different types of manual intervals:
• Flat Sets
• Tabata
• Pyramid Sets
• Custom Sets
• Random
Each interval type provides a different type of workout.
Flat Sets include a Warm up, Cool down and repeating alternate sets of Work and Rest intervals. You can select the number of Work and Rest sets as well as the standard duration of each type.
Tabata is a specific exercise made up of 8 repeating sets of 20 seconds Work and 10 seconds Rest.
Pyramid Sets are similar to Flat Sets, but the duration of each Work and Rest set reduces by half with each set up to the halfway point. Once the halfway point is reached the duration doubles in length. Pyramids are ideal for improving running speed.
The Custom mode allows you to select individual lengths for each Work and Rest interval.
Random mode generates a random set of Work and Rest intervals according to your preference. 5 different Difficulty settings are included, from Light to Hardest.
Imperial Measurements Added
FiT now supports both Metric and Imperial systems for distance and pace. Use the Settings page to select your preferred units.
Happy Fartlekking!
1.1.1 : Fixed an issue whereby duplicate sessions could sometimes be created.
Build 839891784v1.12021-01-05 22:14:29
NEW for 2021:
• Manual interval tracking added with 5 different routine types
• Imperial measurements added
Manual Interval Tracking added!
In addition to Auto Detect mode, FiT now includes 5 different types of manual intervals:
• Flat Sets
• Tabata
• Pyramid Sets
• Custom Sets
• Random
Each interval type provides a different type of workout.
Flat Sets include a Warm up, Cool down and repeating alternate sets of Work and Rest intervals. You can select the number of Work and Rest sets as well as the standard duration of each type.
Tabata is a specific exercise made up of 8 repeating sets of 20 seconds Work and 10 seconds Rest.
Pyramid Sets are similar to Flat Sets, but the duration of each Work and Rest set reduces by half with each set up to the halfway point. Once the halfway point is reached the duration doubles in length. Pyramids are ideal for improving running speed.
The Custom mode allows you to select individual lengths for each Work and Rest interval.
Random mode generates a random set of Work and Rest intervals according to your preference. 5 different Difficulty settings are included, from Light to Hardest.
Imperial Measurements Added
FiT now supports both Metric and Imperial systems for distance and pace. Use the Settings page to select your preferred units.
Happy Fartlekking!
Build 838817366v1.0.22020-11-10 16:48:20
Bug fixes.
Build 838694922v1.0.12020-11-09 20:26:10
Typo in description corrected.
Build 838395581v1.02020-11-08 09:13:53
No pricing data captured yet — comparisons appear once the app has paid storefronts or in-app purchases.
Availability 1 of 1 storefronts
| Region | Language | Price | Ratings | Avg | Version |
|---|---|---|---|---|---|
| US | en-US | Free | 0 | — | 2.7 |
Change log 28 changes · US
✎
releaseNotes updated
Minor fixes and performance improvements.
✎
description updated
Run faster and train smarter with the original Fartlek auto-detect interval training app. Built by runners for runners. For both Apple Watch and iPhone.
Train
✎
subtitle updated
Timer: Intervals, HIIT, Tabata
✎
name updated
Fartlek Interval Trainer
◆
Version 2.7 released
Minor fixes and performance improvements.
◆
Version 2.6 released
Discover more about every workout with the new Metrics chart.
See your pace, heart rate and cadence displayed alongside your intervals to better understand how your performance evolved during each session. Zoom in, pan across your workout
◆
Version 2.5 released
Version 2.5 introduces workout analysis charts, with new visualizations showing your target and actual performance for each interval.
Improved workout summaries provide cleaner, more informative workout reviews with key metrics highlighted
◆
Version 2.4 released
Version 2.4 introduces advanced pace bands for interval workouts.
Structured interval sessions can now use pace bands such as easy, moderate, hard and sprint, giving you a clearer way to plan, follow and review your efforts.
Whether you a
◆
Version 2.3 released
Version 2.3 includes major upgrades to pace band tracking and alerts.
You can now use advanced pace bands in fartlek workouts, helping you track efforts such as easy, moderate, hard and sprint instead of just simple run/walk changes. Avail
◆
Version 2.2.2 released
Minor fixes and performance improvements.
◆
Version 2.2.1 released
Minor fixes and performance improvements.
◆
Version 2.2 released
NEW! Pace Alerts are here.
FiT can now alert you when you drift above or below your target pace, with sound, haptic and on-screen feedback to help you stay on track during workouts.
Available in FiT Pro now.
◆
Version 2.1.4 released
NEW! Share your workout with friends. Tap the Share icon on your completed workout screen to share your workout details via WhatsApp, iMessage, email and more.
◆
Version 2.1.3 released
Minor cosmetic enhancements and bug fixes.
◆
Version 2.1.2 released
Version 2.1.2
Minor cosmetic enhancements and bug fixes.
◆
Version 2.1.1 released
Version 2.1.1
Bug fixes and performance improvements.
Version 2.1
NEW! Strava Integration
Sync your runs seamlessly.
NEW! Advanced Effort Levels
Automatic effort detection.
NEW! Skip to Next Interval
◆
Version 2.1 released
NEW! Strava Integration
Share your runs more easily and keep your training connected with seamless syncing to Strava. Simply connect your Strava account in the Settings page. Automatic syncing available.
NEW! Advanced Effort Levels
FiT now
◆
Version 2.0.3 released
Version 2.0.3
Fixed an issue where navigating back during a workout on iPhone caused loss of the tab bar.
Version 2.0.2
New! Added support for music and other audio during workouts.
Version 2.0.1
New! Ability to search and sort previous
◆
Version 2.0.2 released
Version 2.0.2
New! Added support for music and other audio during workouts.
Version 2.0.1
New! Ability to search and sort previous workouts added.
Version 2.0.0
Completely rebuilt for 2026.
• Brand-new Liquid Glass interface across iPh
◆
Version 2.0.1 released
Version 2.0.1
Ability to search and sort previous workouts added.
Version 2.0.0
Completely rebuilt for 2026.
• Brand-new Liquid Glass interface across iPhone and Apple Watch
• New Dual Ring Progress View showing interval and workout pro
◆
Version 2.0.0 released
Completely rebuilt for 2026.
• Brand-new Liquid Glass interface across iPhone and Apple Watch
• New Dual Ring Progress View showing interval and workout progress at a glance
• Live, colour-coded interval feedback while you run
• All-new wo
◆
Version 1.2.1 released
Fixed bug with ads not being removed when in-app purchase bought
◆
Version 1.2.0 released
NEW LANGUAGES ADDED. FiT now supports the following languages:
• English
• French
• Spanish
• Welsh
New pace metrics added:
• minutes per km
• minutes per mile
Bug fixes and performance improvements.
◆
Version 1.1.1 released
1.1 : NEW for 2021:
• Manual interval tracking added with 5 different routine types
• Imperial measurements added
Manual Interval Tracking added!
In addition to Auto Detect mode, FiT now includes 5 different types of manual intervals:
◆
Version 1.1 released
NEW for 2021:
• Manual interval tracking added with 5 different routine types
• Imperial measurements added
Manual Interval Tracking added!
In addition to Auto Detect mode, FiT now includes 5 different types of manual intervals:
• Flat
◆
Version 1.0.2 released
Bug fixes.
◆
Version 1.0.1 released
Typo in description corrected.
◆
Version 1.0 released