Best Interval Running Free Apps

250+ iOS apps curated and reviewed

4.8 avg rating
20 free apps
Updated September 2026

The best interval running free apps on iPhone average 4.8★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated September 2026.

Compare top Interval Running Free Apps (September 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1RUN interval - Running TimerRUN interval - Running TimerFree4.7★ (1K)NoYesSep 2026
2Interval Timer □ HIIT TimerInterval Timer □ HIIT TimerFree4.8★ (86K)NoYesSep 2026
3Intervals Pro: HIIT TimerIntervals Pro: HIIT TimerFree4.8★ (14K)NoYesSep 2026
4Simple Interval TimerSimple Interval TimerFree4.9★ (5.4K)YesYesSep 2026
5Interval - Simple TimerInterval - Simple TimerFree4.8★ (5)NoNoAug 2026
6Interval TimerInterval TimerFree4.7★ (3.5K)NoYesSep 2026
7Nike Run Club: Running CoachNike Run Club: Running CoachFree4.8★ (418K)YesNoSep 2026
8Interval Timer PlusInterval Timer PlusFree4.9★ (6K)NoYesSep 2026

Top Picks for Interval Running Free

Interval Timer □ HIIT Timer#2

Interval Timer □ HIIT Timer by Float Tech, LLC

The simple workout timer.
Strong Contender
💪 Health & Fitness
4.8😊(86K ratings)
FreeIn-App Purchases
Interval Timer □ HIIT Timer screenshot 1
Interval Timer □ HIIT Timer screenshot 2
Interval Timer □ HIIT Timer screenshot 3
Interval Timer □ HIIT Timer screenshot 4
Interval Timer □ HIIT Timer screenshot 5

Create custom workout timers with adjustable intervals for exercise and rest. Track your progress with detailed history and statistics, and repeat past workouts easily. Enjoy audio cues without interrupting your music.

What We Love

  • 🚀 Simple and easy to use
  • 👍 Customizable settings
  • 🚀 Intuitive interface
  • 🚀 Effective for HIIT workouts
  • 👍 Helpful voice prompts
  • 👍 Plays well with music apps

Room to Improve

  • 🔒 Requires subscription after limited free use
  • 🐛 Music volume issues with voice prompts
  • 🐛 Inconsistent behavior when switching apps
  • 🐛 Lack of final workout notification
Intervals Pro: HIIT Timer#3

Intervals Pro: HIIT Timer by Intervals, LLC

Running & Fitness Workouts
Worth Considering
💪 Health & Fitness
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

  • 👍 Customizable timers and intervals
  • 🚀 Seamless Apple Watch integration
  • 💪 Helps with fitness goals and training
  • 🔍 Detailed workout tracking and analytics
  • 🎨 Intuitive and user-friendly interface
  • 💻 Responsive and helpful developer support

Room to Improve

  • 🐛 Occasional sync and connectivity issues
  • 🔍 Lack of clear guidance and documentation
  • 💰 Paid version required for full functionality

More Interval Running Free apps to explore

FAQ about Interval Running Free

What are the best interval running free apps for iPhone?
RUN interval - Running Timer tops our interval running free apps ranking as of September 2026, with a 4.7-star average from 1K App Store ratings, and it's free to download.
RUN interval - Running Timer has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
We track 250+ interval running free apps on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
This app is designed to make interval and Fartlek running easier to set up and record. It allows users to define custom training sessions with specific targets for 'Hard', 'Easy', and 'Rest' efforts, using either time or distance as the metric.
Key features include the ability to create flexible custom interval sessions, utilize time or distance targets for different effort types, set a Distance Goal for sessions, and receive clear audio and visual feedback. It also offers a full-featured Apple Watch app, detailed run summaries, and Strava sharing.