No subscriptions, no ads, no sign-up. Set your work and rest times, or a target pace for a run, and train. Taps and beeps keep you on track, so you never need to check your wrist.
JTervals is a no-frills interval and paced-run timer that lives on your wrist. Set your active and rest times, or a target pace, press Start, and let your watch tell you when to go, when to ease off and when to speed up.
The screen says ON PACE, TOO FAST or SPEED UP under your target, with your current pace, the distance so far and the pace of your last minute. Quick heavy taps and beeps mean ease off; slow rising ones mean pick it up, so you can tell them apart without looking. Change the target, or the leeway either side of it, mid-workout with a swipe. Miles or kilometres, your choice. Afterwards, your splits and every minute's pace are listed on the watch and kept in its log.
Every workout can begin with a warm-up and end with a cool-down, each as long as you like or switched off. A 5-second countdown leads into the first set. Skip the warm-up when you're already warm, and start the cool-down early when you've had enough.
Every change (go, rest, group rest, cool-down, done, too fast, speed up) has its own haptic tap and beep, and the last five seconds of each phase count down on your wrist. Switch on Voice and your watch says each set, rest and cool-down as it starts, and in Paced mode your pace and on pace, speed up or slow down once a minute, and each mile or kilometre as you pass it. Choose a female or male voice, lifted by Louder voice to cut through street noise. Beeps and voice play through the watch speaker or headphones connected to your watch, dip your music while they play, and sound even when your watch is in Silent Mode. Prefer just the taps? Switch the beeps off and pick light, normal or strong taps, in Settings or in the middle of a workout. Try buttons let you feel and hear your choices before you set off.
The timer is big and colour-coded by phase, so a glance is enough. In Intervals your distance so far sits beside the set count. Want your heart rate, your set count, your distance or the time left? Tap it and it fills the screen for a few seconds.
Pause, resume or stop with one swipe, and change the taps, the voice or your pace target without leaving the workout. When you finish, save the workout or discard it.
Every workout you save is kept in a log on the watch: time, sets, distance, calories and heart rate, and for Paced runs the target, your splits and the pace of every minute. Open one to share it as text or delete it.
Saved Intervals and Paced workouts go into Apple Health as Outdoor Runs, with your heart rate, active calories, distance and GPS route; Trainer sessions are saved as indoor HIIT. They count toward your Activity rings and show up in the Fitness app, route on the map and all, even if you trained without your iPhone nearby.
No accounts, no ads, no tracking. Your workout data and your routes stay in Apple Health on your devices.
Requires Apple Watch Series 6 or later, SE (2nd generation) or any Ultra, running watchOS 11 or later.