Control your
Centra Rz
from your iPhone
Everyone in the house uses the Centra Rz a little differently. Treadmill Pro adapts to each runner with six languages, metric or imperial units, and a choice of light or dark themes, all on the same treadmill.
Free · iPhone & iPad · iOS 15+
Set up the Centra Rz your way
Switch between metric and imperial units, pick a language from six available, and choose a theme that suits how and when you run on your Centra Rz.
A custom app icon for a treadmill that feels like yours
Treadmill Pro lets you pick from several app icons, a small touch that makes the app controlling your Centra Rz feel like part of your setup, not a generic add-on.
Consistent controls no matter who is running
Whether it is a quick walk or a full training run, the same simple speed and incline controls apply to every session on the Rz, so nobody has to relearn the console.
How to connect your Centra Rz
- 1
Launch Treadmill Pro
Open the app on your iPhone. On first launch, allow Bluetooth permission so the app can find your Centra Rz.
- 2
Tap your treadmill
Your Centra Rz appears in the device list within seconds. Tap it, no PIN or pairing code needed.
- 3
Train and sync
Control speed and incline with the large on-screen buttons. End the session, and the full workout log is saved automatically to Apple Health.
Frequently asked questions
Will Treadmill Pro slow down my Centra Rz?
No. Commands sent from your iPhone to the Centra Rz over Bluetooth are near-instant, so speed and incline changes feel the same as using the console directly.
What happens if my iPhone disconnects mid-run on the Rz?
The Centra Rz keeps running at its last set speed and incline. Reopen Treadmill Pro and it reconnects automatically so you can keep adjusting settings.
Does the app drain my iPhone battery quickly?
Bluetooth control of the Centra Rz uses very little power. A typical workout uses a small fraction of your iPhone battery.
Take control of
your Rz
Download Treadmill Pro for free and start controlling your Centra Rz from your iPhone in seconds.
Free on the App Store · iPhone & iPad · iOS 15+