New · Just Run

Treadmill
Smart Speed

Your treadmill already knows how fast you’re running. This tells Zwift — no foot pod, no calibration, no sensor taped to your shoe.

Download on the App Store Get it on Google Play
Treadmill Smart Speed connected, showing 8.0 mph, a 7:30 per mile pace, six speed presets in two rows and 2% incline
Just Run: a runner in an orange top on a park path, 12:42 into a run at 6.2 mph, 1.32 miles estimated at a 9:40 per mile pace, with the speed buttons and presets below
Just past the first mile in Just Run: a “1 mi, split 09:38” banner above the runner and confetti on the path
Just Run’s list of all runs, newest first, each with its date, time, pace and distance in miles; one is marked “free run ended”
The summary of a 3.13-mile run: 30 minutes, a 9:35 per mile pace and 6.3 mph on average, a box to match the treadmill’s distance, and an Export TCX file button
Treadmill Smart Speed showing 5.6 mph and a 10:42 per mile pace, with the speed source reading “Apple Watch · receiving”
Treadmill Smart Speed showing 5.6 mph and a 10:42 per mile pace, with the speed source reading “Arm band · estimating”
The “Getting connected” help sheet: start pairing in Zwift, look for this iPhone by its own name, wait for the pill to turn green, then where the speed comes from
“Thanks for buying the original”: a purchase of the old paid app covers everything in this version, for life
Treadmill Smart Speed on Android showing 10.0 km/h and a 6:00 per km pace, six speed presets in two rows and 2% incline
Treadmill Smart Speed on Android reading a Bluetooth treadmill: 10.4 km/h, a 5:46 per km pace and 2% incline, with the source reading “Treadmill · Home Treadmill”
Just Run on Android: a runner on a park path, 12:41 into a run at 10.0 km/h, 2.12 km estimated at a 6:00 per km pace

Set your speed, and Zwift sees it