The WHOOP 5.0 is the best version of WHOOP so far, mostly because the battery finally lasts two weeks. It’s still the same deal it has always been, though: you don’t buy the band, you rent it. Pay for a membership and you get the hardware plus the app; stop paying and the band stops recording. For a sleep and recovery tracker, that changes the math more than any spec does.

How we built this review: we haven’t worn one, and nothing here is presented as hands-on testing. It’s based on WHOOP’s membership and feature pages, launch coverage from May 2025, the FDA’s public letters about WHOOP’s blood pressure feature, independent pricing breakdowns, and the live Amazon listings (checked October 9, 2026). SnoozeGeek used to run six separate WHOOP reviews covering the 4.0 and 5.0. They’re merged into this page, and there’s a section for 4.0 owners below.

Since May 2025 WHOOP sells three tiers, and the tier decides both the features and the hardware:

• One, $199 a year: WHOOP 5.0 with a basic wired charger. Sleep tracking (stages, efficiency, sleep need and debt), strain, the HRV-based recovery score, VO2 max, heart rate zones, steps and hormonal insights.
• Peak, $239 a year: everything in One plus the wireless PowerPack (charge without taking the band off), Healthspan and Pace of Aging estimates, health alerts and a real time stress monitor. This is the version on the Amazon listing linked here.
• Life, $359 a year: swaps the 5.0 for the WHOOP MG and adds Blood Pressure Insights and the on demand ECG heart screener.

Over three years that’s $597 for One, $717 for Peak and $1,077 for Life. For comparison, an Oura Ring 4 is $349 up front plus $5.99 a month, about $565 over the same three years, and a ring keeps basic tracking if you stop paying. WHOOP doesn’t: per independent pricing breakdowns, historical data stays viewable for a short window after you cancel and the band itself stops working. If you think you’ll quit within a year, that’s the single most important fact on this page.

There’s also a 30 day trial that ships a refurbished 5.0 with Peak features. Read the return terms before you start it, because a late return gets billed as a device fee.

Sleep is where WHOOP has always been strongest. Each morning you get a recovery score from 0 to 100 built from heart rate variability, resting heart rate, respiratory rate and how you slept, plus a sleep need number that changes with yesterday’s strain. That sleep need and sleep debt framing is the most useful thing WHOOP does; it turns “I slept seven hours” into “you needed eight and a half.”

Keep expectations sane on sleep stages. Like every wrist or ring tracker, WHOOP estimates light, deep and REM from movement and heart signals rather than measuring brain activity, so treat single nights as rough and trends as meaningful. A recurring owner complaint is a decent score after a night that felt clearly bad. Ring trackers have a small edge on signal quality, which is a big part of why we compare the two in our Oura Ring 4 vs WHOOP 5.0 breakdown.

WHOOP’s Blood Pressure Insights (Life tier only) estimates daily systolic and diastolic numbers from overnight heart and blood flow patterns, after you calibrate it with a regular cuff. On July 14, 2025 the FDA sent WHOOP a warning letter saying the feature was a medical device being sold without clearance. WHOOP kept the feature, adjusted how results are displayed, and in June 2026 the FDA posted a closeout letter saying it doesn’t intend to enforce device requirements on the modified version, in line with its updated wellness device guidance.

What that means for you: it’s allowed as a wellness feature, not a cleared medical measurement. It can be interesting for trends, but it isn’t a substitute for a cuff if you’re actually managing blood pressure. We wouldn’t pay the extra $120 a year for Life on the strength of that feature alone.

The 4.0 still shows up on Amazon at $199 with a 12 month membership, but the 5.0 is the better buy at the same or similar money. The big difference is battery: the 4.0 lasts about four to five days, the 5.0 is rated at 14 or more. When the 5.0 launched, WHOOP gave members with at least 12 months left on their membership the new hardware free, after an early backlash over upgrade fees.

Buy WHOOP if you train on a plan and will actually change your day based on a recovery number, if you want a tracker with no screen to distract you at night, and if you’re comfortable paying every year. Endurance athletes, lifters running structured blocks and people chasing better sleep consistency get the most from it.

Skip it if you mainly want sleep data and hate subscriptions; a ring like the RingConn Gen 2 has no subscription at all, and our Oura alternatives roundup covers more. Skip it too if you want GPS, notifications or a clock on your wrist. Our sleep tracker buyer’s guide lays out rings, pads and watches side by side.