Runn... Smart Treadmill Sensor

When it works it's ok...but it needs constant adjustments on the treadmill, will constantly show high speeds, incorrect cadence. Not worth it in it's current state

Since my treadmill sensor was not accurate, I went from being unable to confidently do anything other than an easy run indoors and now I'm fully comfortable doing threshold and interval workouts with accurate paces and trusting the results.

Easy to use and connect. Love having this new ability to get new life from my old treadmill.

Dear NPE Team,

Today, I received my Runn sensor (Order #2148) and wanted to share my feedback after installing and using the device.

First, I’d like to commend the ease of installation and calibration, as the video instructions were clear and straightforward. I also appreciated how easily the sensor paired with my Garmin watch, allowing me to monitor my pace directly, which is a fantastic feature.

However, I must express some disappointment regarding the accuracy of the device. As someone using an entry-level treadmill, I was hoping the Runn sensor would compensate for its inherent inaccuracies. Unfortunately, since the calibration relies on the treadmill’s own speed data—which I suspect is highly imprecise—the results don’t meet my expectations. My perceived effort on the treadmill at a given pace feels significantly different compared to outdoor running or using a treadmill at the gym.

Moreover, I was under the impression that the dual optical sensors in the Runn would enable it to independently measure speed without relying on the treadmill’s questionable data. It’s disheartening to see such promising technology still dependent on external calibration from an unreliable source.

On another note, as a Canadian customer, the overall cost of the product turned out to be much higher than expected. While I benefited from a 15% discount, I paid $148.25 CAD (including shipping), along with an unexpected customs fee of $64.77 CAD. This added expense was frustrating, especially given my disappointment with the product’s performance.

I do appreciate the innovation and potential of the Runn sensor, but I had higher expectations for accuracy and autonomy given the technology involved. I hope my feedback can help improve future iterations of the product.

Thank you for taking the time to read my thoughts, and I would be happy to discuss this further if needed.

Best regards

Set-up didn't go smoothly. I calibrated it once then the sensor stopped working; no metrics & unable to recalibrate. I needed to factor reset the calibration twice before the sensor began publishing metrics again.

The Android app could use some UX improvements; i.e., disabling the calibrate button without telling the user it's because the sensor isn't detecting treadmill movement is confusing and seems like the app is broken or frozen.

Speed metrics are incredibly accurate with the treadmill readout, so that's great! However the incline metrics are all over the place, not reliable. Sure would be nice to not allow negative values.

Overall happy with the product, working in the software industry I understand bugs happen and sometimes UIs are clunky.

Would recommend if you're patient and enjoy technology, having treadmill metrics in Garmin is excellent.