After using this machine for a few weeks, I'd rate it a 3/5. It does what it's supposed to do. It's a real quiet stair stepper (A+), but that's about where the praise ends.
The biggest positives are that it's very quiet, the console is simple and responsive, and the stop button on the right handle is a nice convenience. Setup was also fairly straightforward, although reinstalling the rear cover was more frustrating than it should've been.
Unfortunately, several advertised features miss the mark. The handle heart rate sensors are wildly inaccurate. Even when my Apple Watch shows my heart rate around 165 BPM during a hard workout, the machine often reads somewhere in the 80s or 90s. Since heart rate tracking was one of the reasons I chose this machine, that was a major disappointment.
The included smartwatch was also misleading. I assumed it would sync with the machine, but it's simply a basic Android smartwatch that tracks your heart rate independently. If you already own a smartwatch, it's essentially redundant.
A couple of smaller annoyances stood out as well. The side step platforms stick out just enough that I've hit my shins on them more than once, and the calorie counter doesn't account for your height, weight, age, or gender, so the estimates aren't very meaningful.
Overall, I'm satisfied that it functions well as a stair stepper, but it feels like several features were added for the spec sheet rather than executed well. If I were buying again, I'd spend a little more on a better-built machine with more reliable features.
Performance
Value
Build Quality