Finding the right free interval running app can be overwhelming with so many options. We've analyzed 249+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.
Compare top Free Interval Running App (September 2026)
This app simplifies interval and Fartlek running by allowing you to set custom targets for time or distance during hard, easy, and rest efforts. It offers detailed post-run summaries, audio and visual feedback, and an Apple Watch app for enhanced training.
This app offers guided runs, training plans, and community challenges to help users start, continue, and enjoy running. It tracks speed, distance, and GPS routes, providing motivation and expert guidance for various fitness levels and goals.
This app provides a straightforward interval timer for various training types like running, cycling, and HIIT. Customize sets, action, and break durations for a personalized workout experience. It runs in the background and saves recent configurations.
What is the best free interval running app for iPhone?
RUN interval - Running Timer tops our free interval running app ranking as of September 2026, with a 4.7-star average from 1K App Store ratings, and it's free to download.
Does RUN interval - Running Timer have ads or in-app purchases?
RUN interval - Running Timer has no ads and offers in-app purchases, according to its App Store listing as of September 2026.
How many free interval running app are on the App Store?
We track 249+ free interval running app on the iOS App Store as of September 2026, ranked by rating, recency, and analysis of real user reviews.
What does the RUN interval app do?
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.
What are the key features of the RUN interval app?
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.