Speediance Gym Monster Review: Is the Smart Cable Gym Worth It? (Used Buying Guide)
If you have been eyeing a used Speediance Gym Monster and wondering whether a smart cable gym is worth it secondhand, the short version is yes, with one big caveat: the resistance comes from motors, not weight plates, so the condition of the electronics matters more than any scratch on the frame. A new Gym Monster 2 lists around $3,800 and often sells for $2,500 to $3,300 on promotions. A clean used one can save you a four-figure chunk, and unlike most smart gyms, the core training works without a monthly membership.
I help people buy and sell big fitness equipment for a living, so I have watched a lot of smart home gyms change hands. The Speediance Gym Monster is one of the more interesting ones on the used market because it does something Tonal does not: it gives you real, motor-driven digital weight in a folding footprint, without locking the hardware behind a subscription. This review covers what you are actually buying, whether the digital weight is legit, the Gym Monster 1 versus 2 differences, the subscription question, and exactly what to check before you pay for a used unit.
Is the Speediance Gym Monster worth buying used?
A used Speediance Gym Monster is worth it if the motors, cables, and screen all check out and you save at least 30 percent off the new price. The machine’s value is in its digital weight system, so a used unit that powers on, holds resistance smoothly, and comes with its accessories is a strong buy. Skip any unit that cannot be tested under load.
Here is the honest framing. A weight bench holds its value on the used market because there is nothing to break. A motorized smart gym is different. You are buying a computer with two 800-watt motors, a 21.5-inch touchscreen, and a pair of cable arms. Most used units are fine, but the failures that do happen (a motor fault, a dead screen, a frayed cable) are expensive and invisible until you actually load the thing up.
What you’re actually buying
The Speediance Gym Monster is a folding smart home gym that creates resistance with motors instead of plates. Picture a flat platform base you stand on, a vertical frame behind it holding a large touchscreen, and two adjustable cable arms that slide up and down the frame. Inside the base sit dual direct-drive motors that generate the “weight” electronically, up to 220 pounds total, or 110 pounds per arm on the Gym Monster 2.
The whole thing folds down to a footprint about 14 inches deep and stands roughly six feet tall against a wall, which is the real selling point for anyone short on space. A traditional functional trainer or cable machine with a physical weight stack needs a dedicated corner and a lot of ceiling. The Gym Monster tucks flat when you are done. That folding design is also why it shows up so often on the used market: people buy it for small apartments, then move somewhere with a garage and want a rack instead.
Most bundles ship with a barbell, a tricep rope, ankle straps, extension straps, a bench on higher tiers, and the Bluetooth ring that tracks reps. When you shop a used one, the accessory kit matters, because replacing a Speediance barbell or bench individually adds up fast.
Is the digital weight real?
Yes, the digital weight is real resistance, not a gimmick. The motors pull against the cables with genuine force, and your muscles cannot tell the difference between 50 pounds of motor resistance and 50 pounds of iron. If anything, the motor-driven system does things a plate stack cannot.
Because the resistance is software-controlled, the Gym Monster can add eccentric overload (more weight on the lowering phase), chains mode (resistance that ramps as you extend), and spotter modes that ease off when you fail a rep. It also adjusts in one-pound increments, which is smoother than swapping plates or moving a pin. The trade-off is the ceiling: 220 pounds total is plenty for most people, but a serious powerlifter will out-grow it on heavy compound lifts. For general strength training, hypertrophy, and conditioning, the digital weight is more than enough.
Gym Monster vs Gym Monster 2: what changed
The Gym Monster 2 is a refinement of the original, not a reinvention. Both max out at 220 pounds of digital resistance and share the same core software, workouts, and training modes. What the 2 improves is the hardware around that resistance: a quieter, more efficient motor with better cooling, a lighter frame (about 15 pounds less), and an upgraded 2.1 sound system with a subwoofer instead of the original’s small speakers.
There is also a Gym Monster 2S, which bumps per-arm resistance to 130 pounds for people who want more headroom on single-arm work. For a used buyer, the practical takeaway is simple. The original Gym Monster is the value pick and does the same core job for less money. The Gym Monster 2 is quieter and nicer to live with. Only chase the 2S if you specifically need the higher per-arm load. If you are cross-shopping smart gyms generally, our guide to smart home gym alternatives to Tonal puts these in context.
Do you need a subscription?
No, you do not need a subscription to use a Speediance Gym Monster. This is the single biggest reason it appeals to used buyers. The core training features, including free-lift mode, manual weight control, and the on-device workout tools, work without paying a monthly fee. That is a real contrast with Tonal, where the guided experience effectively requires an active membership.
Speediance does sell an optional subscription that adds its full library of guided classes, AI coaching, and programming. Some people love it, others never touch it. Either way, buying used does not strand you: the machine is fully functional out of the box without a recurring charge. When you check a used unit, just confirm the previous owner has removed it from their account so you can set up your own profile cleanly.
Buying a used Speediance Gym Monster: price and what to check
Expect to pay roughly $900 to $1,500 for a used original Gym Monster and $1,800 to $2,800 for a used Gym Monster 2, depending on condition, accessories, and how recently it sold new. Anything priced within 15 percent of new is not worth the risk, since you lose the warranty and gain the uncertainty. The savings have to be real to justify buying a used electronic.
Because this is a motorized machine, a driveway glance is not enough. Here is the inspection order I would insist on before paying:
- Power it on and load resistance. Run both arms at a real weight, like 50 pounds each. The pull should feel smooth and consistent, with no grinding, stutter, or burning smell.
- Test both cable arms independently. A single dead motor turns the machine into half a gym. Check each side through its full range.
- Inspect the cables and handles. Look for fraying near the pulleys. Cable replacement is possible but a hassle.
- Check the touchscreen. Confirm it responds across the whole surface, boots fully, and connects to WiFi.
- Fold and unfold it. The folding mechanism is a moving part. Make sure it latches securely and does not wobble when deployed.
- Confirm the accessory kit. Barbell, bench, straps, ring, adapters. Missing pieces are real money to replace.
- Get the account cleared. The seller should factory-reset the unit and remove it from their Speediance account.
That live, under-load test is the whole game with a used smart gym, and it is exactly the check that is hardest to do when you are meeting a stranger in a parking lot with a folded machine in the trunk.
Gym Monster models compared
| Model | Max resistance | Per arm | Best for | Typical used price |
|---|---|---|---|---|
| Gym Monster (original) | 220 lb | 110 lb | Value buyers, same core features | $900 to $1,500 |
| Gym Monster 2 | 220 lb | 110 lb | Quieter motor, better sound, lighter | $1,800 to $2,800 |
| Gym Monster 2S | 220 lb | 130 lb | More single-arm headroom | $2,200 to $3,200 |
How buying a used smart gym works without the risk
The hard part of buying a used Speediance Gym Monster is not deciding you want one. It is trusting a stranger, moving a heavy folded machine, and paying before you know the motors work. That is the exact gap Commonplace closes. Drivers pick up the unit, and buyers get 60 minutes to test it at home before any money changes hands. You never meet the seller, and every item runs through a multi-point inspection before it ships.
That 60-minute window matters more with a motorized gym than almost anything else, because the expensive failures only show up under load. You get to power it on, run both arms, and check the screen in your own space before you commit a dollar. Every purchase is also backed by a 60-day warranty, so a hidden motor fault becomes our problem, not yours. You can see the whole process on how it works. And if you are the one selling a Gym Monster to upgrade, listing it is simple and you can sell used gym equipment without hauling it or haggling with no-shows.
Frequently asked questions
Is the Speediance Gym Monster worth it?
Yes for most home lifters, especially used. It packs up to 220 pounds of adjustable digital resistance into a folding footprint, and it works without a mandatory subscription. It is not for powerlifters chasing heavy singles, but for general strength and conditioning it earns its space.
Is the digital weight on a Speediance as good as real weights?
For most training, yes. The motor resistance feels the same as a cable stack and adds modes like eccentric overload that plates cannot do. The only limit is the 220-pound ceiling, which most people never reach on isolation and cable work.
What is the difference between Gym Monster 1 and 2?
Same 220-pound resistance and same core software. The Gym Monster 2 has a quieter, more efficient motor, better cooling, a lighter frame, and an upgraded sound system with a subwoofer. The original is the better value if you can find a clean one.
Do you have to pay a subscription for Speediance?
No. Core training features are free to use with no monthly fee, which is a major advantage over subscription-locked smart gyms. An optional subscription adds the full guided class library and AI coaching if you want it.
What should I check on a used Speediance Gym Monster?
Power it on and test both motor arms under real load, inspect the cables for fraying, confirm the touchscreen works fully, fold and unfold it, verify the accessory kit is complete, and make sure the seller has cleared it from their account.
The bottom line
A used Speediance Gym Monster is one of the smarter secondhand buys in the smart-gym category, because it delivers real motor-driven resistance, folds flat, and does not hold your workouts hostage behind a subscription. The catch is that it is an electronic machine, so the money is made or lost in the inspection. Buy the one you can actually power on and load before you pay.
If you want to shop with that safety built in, Commonplace lists inspected used home gyms and delivers them with a 60-minute test window, so you find out how the machine really performs before you commit. Browse the home gym selection, or list the one gathering dust in your spare room and let a driver handle the heavy lifting.