“Bluetooth enabled” appears on a great many fitness machines and tells you very little on its own. Connectivity has two separate layers — how a machine talks, and what it says — and the second is the one that determines whether the machine is genuinely open.
The two layers
| Layer | What it is | Examples |
|---|---|---|
| Transport | How the data physically travels | Bluetooth, ANT+ |
| Profile | What is being said, in a format others understand | FTMS, heart rate profile, cycling power profile |
A machine can support Bluetooth and still say nothing useful over it. Transport without an open profile is a closed machine with a wireless connection to its own app.
Bluetooth against ANT+
- Bluetooth is universal on phones and tablets and is the practical default for connecting to consumer devices. Historically it paired with one device at a time, though modern implementations are more flexible.
- ANT+ is long established in sports and fitness, particularly for sensors, and broadcasts to unlimited receivers simultaneously. Common on cycling computers and sports watches; less common on phones.
- Dual-band devices support both, which removes the question entirely and is the sensible thing to look for in a heart rate strap.
For most home users Bluetooth is what matters, because the receiving device is a phone or tablet. ANT+ matters if you already have a sports watch or cycling computer you want to use.
FTMS, which is the one to look for
The Fitness Machine Service profile is a standardised way for equipment to report and, in some cases, be controlled. A machine supporting FTMS can:
- Report speed, cadence, resistance, power and distance in a format any compatible app understands.
- Be controlled by a third-party app, so a workout or a virtual route can set the resistance.
- Work with software the manufacturer has nothing to do with.
- Continue to be useful if the manufacturer’s own platform ends.
This is the specification that most determines a connected machine’s useful life, and it is checkable before purchase. It is also frequently absent from listings, which means asking.
The heart rate profile
Heart rate has its own long-established profile, over both Bluetooth and ANT+, and it is the most interoperable data in fitness. A chest strap will generally talk to almost anything.
The practical value: many machines can receive an external strap, which replaces the least reliable figure on the console — hand-grip heart rate — with the most reliable. If you train by heart rate, checking whether a machine accepts an external strap is more useful than any console feature.
What each combination gives you
| Machine supports | What you can do |
|---|---|
| Nothing | Read the console. That is all. |
| Bluetooth, proprietary app only | Use the manufacturer’s app, for as long as it exists |
| Heart rate profile (receive) | Pair a chest strap and get reliable heart rate on the console |
| FTMS (broadcast) | Third-party apps can read the machine and record your sessions |
| FTMS (broadcast and control) | Third-party apps can also set resistance — virtual routes and structured workouts |
Practical pairing problems
- One connection at a time. Some machines will pair with a single device, so the app and the watch compete. Disconnect one before pairing the other.
- Forgotten pairings cause more connection failures than anything else. Clearing old pairings on both machine and device resolves most of them.
- Firmware updates sometimes change connectivity behaviour, occasionally for the worse.
- Range and interference are rarely an issue at home, but a machine in a garage with a phone in the house will not connect.
- Regional or account restrictions occasionally limit which apps a machine will talk to.
What to ask before buying
Three questions, in order of usefulness: does it support FTMS; can it receive an external heart rate strap; and can session data be exported in a standard file format? A machine that answers yes to all three will still be useful long after its original app has been forgotten, and one that answers no to all three is a machine plus a console, which is a perfectly reasonable thing to buy provided you know that is what it is.
Sensors that add connectivity to an unconnected machine
If a machine broadcasts nothing, you are not stuck. Several inexpensive sensors can make it partially readable by an app.
- A heart rate strap is the single most useful addition and works with almost anything.
- A cadence sensor on a bike crank gives pedalling rate to cycling apps.
- A speed sensor on a flywheel or wheel gives distance and speed.
- A power meter, if you are using your own bicycle on a trainer, gives the most meaningful metric available.
None of these makes the machine controllable, and together they make a basic machine perfectly usable with third-party training software — frequently for less than the cost of a year of a manufacturer subscription.
Checking what a machine actually supports
- Look for FTMS by name in the specification or manual, not just “Bluetooth”.
- Ask the retailer directly. A specific question usually gets a specific answer.
- Check whether third-party apps list the model as compatible — most maintain a supported-hardware page.
- Look at owner discussion for the model, which is where connectivity quirks surface.
- Treat silence as a no. Manufacturers who support open standards generally say so, because it is a selling point.
Ask for FTMS by name
Transport tells you how a machine talks; the profile tells you whether anyone else can understand it. Bluetooth on its own means very little. FTMS is the specification that opens the third-party ecosystem and protects the machine against its manufacturer’s decisions, and the ability to receive an external heart rate strap is the cheapest console upgrade there is. Ask about both by name, and treat an absence of any mention as an answer.
Related reading
- Start here: Connected Fitness Equipment: What the Subscription Buys
- Data Ownership and Export From Fitness Platforms
- Equipment That Works Without a Subscription
- Firmware Support and Product Lifespan
- Fitness Equipment Safety Standards and What Certification Means
- Browse smart and connected equipment
- Not sure where to start? Try the equipment recommendation tool
How we compare
Compare Fitness Equipment does not physically test equipment. Our comparisons are built from published manufacturer specifications, the standards those specifications are measured against, and the trade-offs that follow from them. We say which figures are set by an agreed standard and which are defined by the manufacturer, because the difference changes how much weight a figure deserves. Specifications, prices and stock change without notice, so check the current figures on the retailer’s own page before you buy. Where we earn a commission from a retailer link we say so on the page it appears.