The watch and the treadmill disagree
Why the two numbers drift apart, and which one to trust before you correct anything.
The watch saved 5.92 km, the treadmill said 6.4. Type in the real number and Apple Health gets a corrected copy of the workout, with pace and distance-driven fields recalculated.

Indoor distance goes wrong in a few specific ways. Each one has its own answer, and not all of them need an app.
Why the two numbers drift apart, and which one to trust before you correct anything.
What Apple actually allows, why HealthKit will not edit distance in place, and what a corrected copy means.
Calibration, arm movement and the limits of wrist-based distance estimation.
The app is built around one job: fixing inaccurate indoor workout distance without turning it into a fitness dashboard.


Six screens covering a wrong distance from the moment you spot it to the corrected workout.

Apple Health does not offer a simple direct distance edit. Fix My Treadmill saves a corrected workout copy instead.
The correction flow is local to your device and Apple Health permissions. App Store purchase actions require Apple services.
No developer account, ads, or cross-app tracking are used. See the privacy policy for the exact data handling details.
Step-by-step explanation for wrong treadmill distance and how correction works.
Contact details, troubleshooting, and app support resources.
How the app uses Apple Health access and handles data.