Nine years is a long time to gatekeep a feature behind a $400 wearable. That’s roughly how long GymKit has existed — Apple’s tap-to-connect system that syncs your workout data with treadmills, ellipticals, and bikes — and for all nine of those years, it required an Apple Watch on your wrist. No watch, no GymKit. Full stop.

iOS 27 changes that. Apple quietly expanded GymKit to work with just an iPhone and a pair of AirPods Pro 3, which is the first time in the feature’s history that a smartwatch isn’t the price of entry. Pair that with the BowFlex T6, a $999 treadmill that 9to5Mac reviewed on August 12 and confirmed ships with full GymKit support, and you’ve got something that didn’t really exist before: a legitimate path into connected cardio equipment that costs nothing extra on top of gear you probably already own.

Quick Verdict

	Details
What’s new	GymKit now works with iPhone + AirPods Pro 3, no Apple Watch required
Requirement	AirPods Pro 3 specifically — other AirPods models don’t supply heart rate data
How you connect	Tap iPhone to the NFC reader on compatible cardio equipment
Data flow	AirPods Pro 3 send heart rate to the machine; iPhone receives speed, incline, distance, pace, and calories back
Affordable hardware option	BowFlex T6 treadmill, $999, GymKit built in across the T6/T9/T16 lineup
Also works with	Peloton, Zwift, and BowFlex’s own JRNY platform — not locked to Apple Fitness+
Sources	MacRumors, 9to5Mac, BGR, Apple’s own support documentation

Best for: Apple Watch owners who leave it charging, and anyone who’s never bought one but already owns an iPhone and AirPods Pro 3. Skip if: You don’t own AirPods Pro 3 — older AirPods models can’t measure heart rate, so this doesn’t work with them.

How Does GymKit Work Without an Apple Watch?

Here’s the featured-snippet version, because this is the part everyone’s actually searching for:

1. Tap your iPhone to the equipment’s NFC reader. Same tap-and-beep motion that used to require an Apple Watch, now works with the phone itself.
2. AirPods Pro 3 supply your heart rate. This is the part that makes the whole thing function — 9to5Mac’s testing found that without AirPods Pro 3 connected, the iPhone can’t complete the GymKit handshake at all. No heart rate source, no connection.
3. The machine sends data back to your iPhone. Speed, incline, distance, pace, and calories — the numbers the treadmill or elliptical can measure more precisely than your phone or earbuds ever could.
4. Everything logs to Apple Health, the same as it would from an Apple Watch.

That last point matters more than it sounds. This isn’t a stripped-down version of GymKit. It’s the real two-way sync, just routed through different hardware.

Why AirPods Pro 3 Specifically

Not every pair of AirPods can do this. AirPods Pro 3 added in-ear heart rate sensing, which is the one piece of biometric data an iPhone alone can’t generate. The phone can track your location and, indirectly, your pace. It has no way to measure your pulse. That gap is exactly why GymKit stayed watch-only for nine years — someone had to supply heart rate, and until now, the Apple Watch was the only Apple product that could.

AirPods Pro 3 close that gap. Older AirPods, including AirPods Pro 2, don’t have the sensor hardware and won’t work here. If you’re shopping for AirPods specifically to get this feature, that’s the model to check for, not just “any AirPods Pro.”

Reported By Multiple Outlets, Confirmed by Apple’s Own Docs

This isn’t a single leaker’s rumor. MacRumors reported the GymKit expansion first back in June, 9to5Mac ran a hands-on breakdown of how the NFC handshake and data flow actually work in early August, and BGR covered it independently with the same core details: no Apple Watch, AirPods Pro 3 for heart rate, iPhone for everything else. Apple’s own support documentation on gym equipment pairing backs up the underlying mechanics of how GymKit’s NFC handshake has always worked, even though the watch-free path is new enough that Apple hasn’t rewritten every page to reflect it yet.

Three independent outlets landing on the same specifics is about as close to confirmed as a pre-release iOS feature gets before Apple’s own keynote makes it official.

The BowFlex T6: GymKit at a Normal Treadmill Price

The AirPods side of this story is about software. The BowFlex T6 is about hardware, and it’s arguably the bigger deal for anyone who doesn’t belong to a gym with GymKit-enabled machines already installed.

GymKit-compatible commercial equipment has historically lived at commercial gym prices — think Life Fitness or Technogym machines that cost what a used car costs. 9to5Mac’s August 12 review points out that the T6 brings GymKit down to roughly a tenth of that, at $999. That’s not a discount tier stripped of the feature, either — GymKit ships across BowFlex’s T6, T9, and T16 treadmills, so it’s not reserved for the flagship.

The T6 itself is a reasonably specced home treadmill: a 20” x 60” deck, speeds up to 12 mph, incline up to 15%, and dial controls instead of a built-in touchscreen — you bring your own phone or tablet for the display. And GymKit compatibility doesn’t lock you into Apple’s ecosystem for content. The T6 also works with Peloton and Zwift, plus BowFlex’s own JRNY platform, so the treadmill hardware and the GymKit connection are separate from which app you actually train with.

What This Means If You Don’t Own an Apple Watch

For years, the practical advice on this site for anyone gym equipment-curious but Watch-less was simple: GymKit isn’t for you, go look at Strava’s GPS tools or a chest strap instead. That advice is now outdated for a specific slice of readers.

If you already own an iPhone and AirPods Pro 3 — a genuinely common combination, not a stretch purchase — you can walk up to a GymKit-enabled treadmill and get the same two-way data sync an Apple Watch owner gets. No new hardware required. And if you’re building a home setup instead of relying on gym equipment, the T6 makes owning GymKit-compatible gear a normal purchase decision instead of a commercial-equipment fantasy — the kind of no-subscription, buy-it-once value we’ve been tracking on the wearable side with things like Garmin CIRQA.

It’s not a total replacement for wearing an Apple Watch day to day, and Apple isn’t positioning it that way. Workout Buddy, Apple’s on-wrist AI coaching feature we reviewed earlier this year, still requires the watch — GymKit-over-iPhone doesn’t touch that. But for the specific job of connecting to cardio equipment, the watch requirement is gone.

Who This Actually Helps

Apple Watch owners whose battery dies mid-week: GymKit on iPhone is a real backup, not a downgrade. Forget to charge your watch, left it on the nightstand — you can still tap in.

People who never bought an Apple Watch: This is the bigger shift. If the $400+ price of an Apple Watch was the only thing keeping you off GymKit-enabled machines, that barrier is gone, assuming you already have AirPods Pro 3.

Home gym builders on a budget: The T6 at $999 is the first time GymKit compatibility has shown up on equipment priced like, well, a treadmill instead of a small business expense. Combine it with iPhone-and-AirPods tracking and you can build a fully GymKit-connected setup without an Apple Watch anywhere in the picture.

Who Should Skip This

Anyone without AirPods Pro 3: This is a hard requirement, not a nice-to-have. Regular AirPods, AirPods Pro 2, AirPods Max — none of them have the heart rate sensor this depends on.

Serious Apple Watch users who already wear one daily: Nothing here replaces the watch’s always-on tracking, Workout Buddy coaching, or the dozen other things a watch does that a phone in your pocket can’t. This is additive, not a reason to stop wearing yours.

Anyone whose home gym plans depend on a screen-first treadmill experience: The T6 skips a built-in touchscreen in favor of dial controls and a device shelf. If you want an integrated display like a Peloton, look elsewhere — GymKit support and screen quality are separate purchase decisions here.

The Bottom Line

Apple built GymKit as an Apple Watch feature for nine years, and iOS 27 is the first real crack in that requirement. AirPods Pro 3 supplying heart rate is a clever workaround — it’s not a coincidence that Apple waited until it shipped earbuds with the right sensor before opening this up. Combined with the BowFlex T6 dragging GymKit-compatible hardware down to a normal treadmill price, this is the first time the whole GymKit ecosystem is realistically accessible without ever buying an Apple Watch.

It’s not a reason to skip the watch if you want one — Workout Buddy and the rest of what watchOS does still requires it, and Apple’s broader wearable strategy is reportedly still very much watch-centric, even as its health leadership has scaled back other AI ambitions. But if the Apple Watch was the specific thing standing between you and GymKit, that excuse is gone as of iOS 27.

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Details reflect reporting from MacRumors (June 9, 2026), 9to5Mac (August 6 and August 12, 2026), and BGR, cross-referenced with Apple’s support documentation on GymKit pairing. iOS 27 and the features described are based on pre-release reporting; final behavior may differ at general release.