Treadwell: Treadmill Tracker
Real treadmill pace & distance
About
Accurately measures your real treadmill speed and distance using your phone's camera and LiDAR sensor. It helps you understand discrepancies between treadmill displays and actual performance, and can calibrate machines for precise training.
What's New in Treadwell
1.1
October 12, 2026
• A quick tour the first time you measure. Three short cards show how to hold your phone and what to expect. • Apple Watch runs now save to Apple Health reliably and never twice, and Health shows Treadwell's distance instead of the watch's own estimate. • If your first reading fails, Treadwell asks once whether you want to send us the clip so we can fix it for your treadmill. It is always your choice: sharing anonymous results and sending failed clips both stay off until you turn them on in Settings, under Help improve Treadwell. • Report a problem now includes your last few measurements, so we can see what went wrong. • Clearer message on iPhones without LiDAR. Treadwell needs an iPhone Pro for now, and we are working on support for more iPhones. • Old diagnostic data now cleans itself up, so Treadwell uses less storage.
MoreSubscriptions & In-App Purchases
$14.99
Treadwell Pro
Unlocks calibration, live tracking, and history
FAQ
Does Treadwell have ads?
No, Treadwell is ad-free. It focuses on providing an uninterrupted experience for users tracking their treadmill workouts.
How accurate is Treadwell?
Treadwell uses your phone's camera and LiDAR sensor to measure the actual movement of the treadmill belt, providing a more accurate reading than the treadmill's display. It aims to be highly reliable, only providing data when it can get a clean read.
What devices does Treadwell support?
Treadwell requires an iPhone Pro or Pro Max (iPhone 12 Pro or later) due to its reliance on the LiDAR sensor. It also supports Apple Watch integration.
Can Treadwell calibrate my treadmill?
Yes, Treadwell can calibrate specific treadmills. After measuring a few points, it learns the machine and can tell you the true speed for any setting or which setting to use for a target pace.
What if my treadmill belt has no markings?
Treadwell's camera reads markings or logos on the belt to track its movement. If your home treadmill belt is completely plain, it may not work effectively. Most gym treadmills have visible markings.
How often is Treadwell updated?
The latest version of Treadwell is 1.1, which was last updated on October 12, 2026. This indicates regular updates to improve functionality and compatibility.
Is Treadwell suitable for all runners?
Treadwell is ideal for runners who train on treadmills and are concerned about the accuracy of their machine's displayed pace and distance. It's designed to address the discrepancies that can occur with treadmill technology.
What is the age rating for Treadwell?
Treadwell has an age rating of 4+, making it suitable for users of all ages who meet the device requirements.
