RUN interval

RUN interval is a running app designed to make interval and Fartlek training easier to set up, track and review. Built for iPhone and Apple Watch, it lets runners create sessions using time, distance or both for “Hard,” “Easy” and “Rest” efforts. Users can choose a format, set effort targets and repeats, then start their workout. Flexible custom intervals can combine multiple sets, while Record Interval supports manually switching between efforts during group or less structured sessions. The app also offers normal run recording and a Mona Fartlek workout based on a format created by Steve Moneghetti.

After a run, users can review overall average pace, time and distance for hard and easy efforts, as well as pace and distance for individual intervals. Apple Watch and iPhone records synchronize automatically. RUN interval stores running records in Apple Health and says it does not send user data to a server or share it with unknown parties. Runners can optionally share a workout through Strava or as a summary image.