• There's now an open source app available for Whoop bands
• You can install it for free on Android and macOS
• Whoop has yet to respond, but may block access to its trackers

If you own a Whoop band or have read any of our Whoop reviews, you'll know that the premium fitness tracker comes with a monthly subscription attached. However, thanks to the efforts of an independent developer though, you can now get at your Whoop data without paying anything.

The app is open source, available for Android and macOS, and called Noop (via Android Central). You do need to do a little bit of work to get it set up (it needs to be sideloaded on Android), but instructions are provided on the GitHub page. It should work with the Whoop 4.0, Whoop 5.0, and the Whoop MG bands.

"I built it for one reason," the app creator Kabir Khalil said in a post on Reddit. "To read my own data, off a strap I own, on a machine I control, without it living in someone else's cloud. That's the whole idea."

As Whoop's own algorithms aren't available to the developer, Khalil says he's used "my own maths" based on "published methods" to come up with fitness scores and data interpretations from the raw figures that are grabbed from the tracker device.

Positive feedback

WHOOP with no subscription, no cloud, no account — it's OUT today. Fully open source, Mac + Android. from r/whoop

While the idea of a cloud-free, offline experience will appeal to many, it's the zero cost that Whoop users will be most interested in. Whoop subscriptions start at $199 / £169 / AU$299 per year, though the device itself is included in that cost.

And users seem to be keen to give this a try: "this looks awesome" one Redditor has commented, in a thread that's full of positive feedback (as well as some requests for technical help from those who are having trouble getting the app working).

We've contacted Whoop about the app and will include the company's response here if we get one, but it clearly won't be happy about users sidestepping the need for a subscription on their hardware. It's possible that future updates to the bands will lock out access for third-party apps like this one.

Noop does seem to be part of a small trend however. A similar app called Goose has also just popped up, though it's at an earlier stage in its development than Noop, and another one called Whoof has apparently been running for a little while now — so if you want an alternative Whoop app, you've now got several options.

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Dave is a freelance tech journalist who has been writing about gadgets, apps and the web for more than two decades. Based out of Stockport, England, on TechRadar you'll find him covering news, features and reviews, particularly for phones, tablets and wearables. Working to ensure our breaking news coverage is the best in the business over weekends, David also has bylines at Gizmodo, T3, PopSci and a few other places besides, as well as being many years editing the likes of PC Explorer and The Hardware Handbook.