Most automatic strokers that market themselves as "hands-free" still require you to do one of two things: grip the housing to stop it sliding away, or attach a third-party clamp that wasn't designed for the device. Neither is truly hands-free — they just reduce how much you have to hold.
Rubjoy is engineered differently, and the difference comes down to basic physics.
The recoil problem
Any device that produces mechanical force in one direction creates an equal and opposite force in the other direction. In a linear stroker, every downstroke pushes back against whatever is holding the device up — whether that's your hand, a clamp, or a surface mount. At speed, that force is significant, which is why handheld strokers slide, wobble, or require a firm grip to stay in position.
How Rubjoy solves it
Rubjoy's robotic arm mounts to a heavy-duty adjustable stand, which connects to a weighted oval base plate. During use, you sit or lie with your body weight on the base plate. Your own weight anchors the entire assembly — the base, the stand, and the robotic arm — against the recoil force the motors produce. The heavier the user, the more stable the machine.
Because the mount point is aligned directly with the drive axis, the opposing forces cancel each other out at the base rather than transferring to your hands. The result is a machine that stays completely still during operation without any gripping, clamping, or stabilizing required. Both hands are genuinely free.
What truly hands-free actually means
With Rubjoy running on a programmed loop, you can type, use a phone, watch content, or simply keep both arms at your sides. The machine runs the motion. You contribute nothing mechanically. That is the distinction between a device that is hands-free by design and one that uses "hands-free" as a marketing claim.
The adjustable stand allows positioning for seated, lying down, or elevated use. Once the angle and height are set and locked, the position holds for the duration of the session.