Cubii Pro Under-Desk Elliptical Review (2026): The Quiet

Why you should trust this review

I bought this machine and used it under my own desk for ten months. Cubii did not provide it and had no part in this review. Under-desk fitness gear is full of optimistic claims and gear that ends up shoved in a closet by week three, so the only review worth writing is one from someone who actually kept using it across real workdays. That is what I did, parking my feet on it during calls, writing sessions, and the long stretches of desk time that are exactly when this kind of device either helps or gets ignored.

Ten months is long enough to see past the novelty. I learned where it fits and where it does not, how it holds up to daily use, and whether the tracking features are useful or just gimmicks. Everything here comes from genuine daily use at a desk, not a quick trial.

How we evaluated

I used the Cubii Pro under a standard desk during normal working days, cycling through its resistance levels from the easy shuffle setting up to the harder levels that actually raise your heart rate. I paid attention to whether it fit under the desk’s knee well, whether the foot height was comfortable, and whether the motion stayed smooth as resistance climbed.

For noise, I listened for whether it was audible on video calls and in a quiet room, since that is the real-world test for an office device. I connected it to the companion app and a fitness tracker to see how the Bluetooth syncing behaved over weeks of use, checking whether step and calorie data showed up reliably. I also moved it between desks a few times to judge how practical that is given its weight, and I watched for any drift in the pedals or the flywheel over the months.

Quiet operation

The quietness is the single best thing about this machine, and it is not a marketing exaggeration. The flywheel mechanism produces only a soft whir that sat below the background hum of my room, quieter than a refrigerator. I took video calls while pedaling and no one ever asked what the sound was, because there effectively was not one to ask about. For an office or a shared home workspace, this matters enormously: a noisy under-desk device is one you stop using out of self-consciousness, while a silent one fades into the background and you actually keep going. After ten months it was just as quiet as on day one.

Elliptical motion and knee comfort

The elliptical stride is the other reason I kept using it. Instead of the circular spinning pedal of a basic under-desk cycle, the Cubii moves your feet in a flatter elliptical path, and the difference in knee strain is real. Spinning-pedal exercisers tend to push the knees up and into the underside of the desk, which is the complaint that ends a lot of those purchases. The Cubii’s elevated foot height clears a standard desk knee well, and the elliptical path kept my knees comfortable across long sessions where a cycle would have started aching. For anyone whose knees are the limiting factor, this is the meaningful design win.

Resistance range and tracking

The eight resistance levels cover a genuinely useful spread. The lowest setting is an easy, almost mindless shuffle you can do while concentrating on work, and the top levels provide enough load to feel like an actual light workout if you want to push. That range means the machine grows with you rather than feeling trivial after a week. The Bluetooth tracking syncs to the companion app and a popular fitness tracker, logging steps and estimated calories, and over ten months it connected reliably enough that I trusted the numbers as a rough guide. Seeing the totals genuinely nudged me to keep moving, which is half the point of a device like this.

Weight and everyday practicality

The honest downsides are physical. At its weight, this is not something you casually carry from room to room; moving it between desks takes deliberate effort, so plan to give it a permanent home rather than treating it as portable. The stock pedals can also slip on a hard tile floor, so on tile you will want a mat or a textured surface underneath to keep it planted. And it costs real money compared with a bare-bones pedal exerciser. Those are the tradeoffs you accept for the quiet motor and the knee-friendly stride, and for desk use I found them easy to live with once the machine was set up where it belongs.

Who should buy the Cubii Pro?

Buy it if you spend long hours at a desk, you want to add gentle movement without disrupting calls or coworkers, and you care about a knee-friendly motion over a basic spinning pedal. The quiet operation and app tracking make it the under-desk elliptical I would pick for office use.

Skip it if you want something cheap and disposable, you need a device you will frequently carry between rooms, or you are after a serious cardio workout rather than steady low-intensity desk movement. A basic pedal exerciser or a real elliptical would suit those needs better.

The verdict

After ten months, the Cubii Pro is the under-desk elliptical I would buy again. It is genuinely quiet enough for calls and shared spaces, the elliptical motion kept my knees comfortable where a spinning pedal would have hurt, the eight resistance levels gave it real range, and the Bluetooth tracking kept me accountable. The tradeoffs are honest and predictable: it is heavy to move, the pedals want a mat on tile, and it costs more than a basic exerciser. None of those undercut what it does well. If you want to turn long desk hours into steady, low-impact movement without annoying anyone around you, this is the device that actually gets used instead of abandoned, and that is the whole game with under-desk fitness gear.