Retrofit for gym equipment
Every machine in your gym. Connected.
A slim sensor bar and a small module turn any strength or cardio machine, any brand, any year, into a connected one. SOLO reads the weight you selected, counts every rep and measures range of motion, with no typing.
No new machines. No extra floor space. Installed while you stay open.
Not running a gym?Equipment manufacturerBuilding an appI train at a gym
- brands on our list
- 30+
- weight read from the stack
- Auto
- in Europe, the US, China and Australia
- Patents
- from sensor to app
- Instant
Brand-agnostic
We support every manufacturer.
Every weight stack and every cardio machine: treadmills, bikes, ellipticals, steppers, rowers. Here are some of the brands SOLO works with.
Who it is for
One system, four ways to use it
Gyms and clubs
Upgrade the whole floor instead of replacing it. Give members automatic tracking and see real equipment usage.
Learn more→Equipment manufacturers
Ship connected machines without building the electronics, firmware and apps yourself. Factory fit or retrofit.
Learn more→Integrators and developers
Gym software, fitness apps, games. Our SDK streams live rep data from any SOLO machine into your product.
Learn more→You train at a gym
Tap your phone on the machine and just lift. SOLO counts every rep and keeps your history for you.
Learn more→Installation
Same machine. Now smart.
- 1
Your machine, as it is
Any brand, any year, with or without a screen.
- 2
Sensor bar next to the stack
A slim bar mounts on the frame beside the weight stack. It reads every plate and every millimetre of movement.
- 3
SOLO module on the frame
Battery powered, or powered by the machine on factory installs. Members tap their phone on it to start.
- 4
The machine is smart
Weight, reps, range of motion and tempo go to the app instantly. It still looks and works exactly like your machine.
Detects the selected weight automatically, a method protected by our granted patents.
Unedited
Real set. Real data. Same second.
The camera and the phone screen were recorded at the same time, at a real gym. Nothing was added in post: every rep shows up in the app the moment the stack moves.
- Weight detected from the stack
- Reps counted at the top of the movement
- Range of motion in centimetres
Patented technology
Protected by granted patents in Europe, the US, China and Australia
The way SOLO reads a weight stack is our own invention, developed and patented by Heavy Kinematic Machines.
- Europe
- United States
- China
- Australia
SOLO SDK
The machine is the controller
The same live data that powers our app is open to developers. Teams build games, interactive challenges, rehab tools and custom displays on top of it, on Android and iOS.
- Stack position in real time
- Rep, phase and set events
- Weight detection
- Machine occupancy
New SOLO Workout app
Your training log writes itself
Members see every set as it happens, then where they trained and how hard: a muscle map, weekly volume and personal bests. No pen, no typing.
- Live reps, weight and tempo
- Muscle map and training volume
- Plans from your coach or gym
- Strength and cardio in one history
Exercise library
Every exercise, shown
A large library of exercises with short video instructions, recorded by our coaches or by your own gym. Members see the right technique before the first rep.
- Low row machine
- Seated one-arm cable pulldown
- Cable biceps curl
- Hip abduction machine
- Back extension machine
- Cable leg kickback
SOLO Console
See how your floor is really used
Utilisation per machine, active sessions, peak hours, battery and status of every module. Decide what to buy, move or retire based on data, not guesswork.
92%Lat pulldownA1
71%Pec deckA2
88%Leg extensionB1
18%Triceps pushdownC3
64%Biceps curlC1
83%Leg curlB2
- Equipment inventory
- Usage per machine and peak hours
- Fault and battery alerts
- Compare clubs and machines
- Workout plan management
Your brand
Your colours. Your logo. On every machine.
The SOLO module can wear your brand: any colour, with your logo on the front. Together with the white-label app and console, members see your brand from the machine to their phone.
- Any colour
- Your logo on the module
- White-label app and console
- Full SDK and dev kit access
Questions we hear a lot
Does SOLO really work with any brand?
Yes. SOLO measures the movement of the weight stack (or belt and flywheel on cardio), not the electronics of the machine. Brand and year of production do not matter.
Do I need to modify or rewire machines?
No. The sensor bar and the module mount without changing how the machine works. The module runs on batteries, so no wiring is needed. The machine stays in service.
How long does installation take?
We go machine by machine, so the gym stays open. How long it takes depends on how many machines you have; we plan it with you.
Do members need special equipment?
Only their phone. They tap it on the machine (NFC) or pick the machine in the app.
Can we connect SOLO to our own software?
Yes. The SDK and cloud API connect SOLO to gym management systems, member apps and custom products. We also offer a white-label app.
Which machines can SOLO connect?
Every weight stack machine and every cardio machine: treadmills, bikes, ellipticals, stair climbers and rowers, from any brand and any year.
Next step
See SOLO on your own machines
Tell us what equipment you run. We will show you how SOLO fits your floor, your app and your software.
- 1
30-minute call
We learn about your gym, your machines and your goals.
- 2
Live demo
You see SOLO running on the brands you already own.
- 3
Installation while you stay open
Machine by machine, the floor stays open.