About the app
About Interval Run
Interval Run is an interval timer and workout builder for iPhone and Apple Watch. It is developed by Roma Sosnovsky, the developer named on its App Store listing.
Pick a workout. Build a workout. Run it.
The app brings run/walk timers, structured steps, voice cues, and an Apple Watch workout into one flow. Its bundled library contains 26 interval workouts; the full library and advanced workout authoring require Interval Run Pro.
From interval timer to workout companion.
Interval Run first appeared on the App Store in January 2015. The August 2026 version 3.0 release added a redesigned workout experience with Apple Watch support, Apple Health tracking, workout history, and more ways to build and follow intervals. The App Store listing records the release history and names Roma Sosnovsky as the developer.
Designed to keep your workout yours.
There is no account, advertising, tracking SDK, or server that stores your workouts. With your permission, completed sessions can be saved to Apple Health.
Try Interval Run.
Download the app, create a run/walk timer, or explore the Pro workout library.