Whoop's screenless strap measured strain, recovery and sleep, and pro sports had embraced it — the NFL Players Association made it the league's official recovery wearable in 2017. But selling the device for $500 left the company competing on hardware against Apple and Google, so with the Strap 3.0 it flipped the model.

Stop selling the strap and sell the service: hardware is free with a monthly membership, so the company earns by keeping athletes engaged, not by shipping boxes.

The Whoop Strap 3.0 became free with membership: subscribers pay from $30 a month for the hardware, the analytics platform and coaching, plus access to the Whoop community. The company described the change as moving from a pay-for-device model to a membership bundle, and said users could cancel after their initial subscription term and keep the wearable along with their data.

Whoop announced a $55 million Series D in November 2019, taking its total funding past $100 million, with the money earmarked for consumer acquisition and membership services. Investors described the result as a software-as-a-service product, and later Whoop hardware shipped the same way — the 4.0 strap was included with membership rather than sold separately.

Whoop built its name in pro sports: a screenless wrist strap that measured strain, recovery and sleep, worn by athletes in the NBA, MLB and PGA, and backed by the NFL Players Association as its official recovery wearable. The problem was the business model — selling the device itself for $500 put Whoop in a hardware war with Apple and Fitbit.

With the Whoop Strap 3.0 in 2019, the company stopped selling hardware. The strap became free with membership, priced from $30 a month, and the subscription bundled the device with Whoop's analytics platform, coaching tools and community.

Whoop framed the shift as moving from pay-for-device to a membership bundle, letting users cancel after their initial term and keep the wearable and their data. The model made recurring engagement the product, rather than the box the sensor shipped in.

Free hardware removed the $500 purchase barrier, so the decision to try Whoop became a monthly commitment instead of a big one-off buy.

Revenue tied to membership rewarded keeping users healthy and engaged, aligning the company with outcomes rather than shipments.

Hardware upgrades became membership benefits: Whoop could ship a new strap to subscribers instead of asking them to buy again.

Professional athletes as unpaid, visible users became distribution — every player wearing the strap advertised the service without an endorsement fee.

When the value is ongoing insight, charge for the service, not the hardware: a free strap removes the purchase barrier and makes every month a renewal decision.

Whoop closed a $55 million Series D led by Foundry Group in November 2019, months after the model switch, bringing total funding past $100 million, with investors describing the result as a software-as-a-service product. Founder Will Ahmed told Fox Business that athletes wore the strap without being paid, calling that a bigger endorsement than paid sponsorship. The structure stuck: Whoop's 4.0 launch in September 2021 made the new strap free to members with at least six months of subscription commitment, shortly after the company raised $200 million at a $3.6 billion valuation.

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The sources

  1. Whoop, there it (the money) is! — Whoop closes $55 million Series D round Patent Forecast · sectors.patentforecast.com ·
  2. How Whoop wearable device could solve NBA's load management problem Fox Business · foxbusiness.com ·
  3. New Whoop Wearable Tracks Skin Temperature, Oxygen Levels Sports Business Journal · sportsbusinessjournal.com ·