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Whoop took nearly four years to replace the Whoop 4.0 — and when the Whoop 5.0 finally arrived in May 2025, it changed more than hardware. New sensors, a 14-day battery, a medical-grade Whoop MG variant, and a completely restructured membership all landed at once.
If you’re a current 4.0 member wondering whether to upgrade, or you’re choosing your first Whoop in 2026, this Whoop 5.0 vs Whoop 4.0 comparison covers exactly what changed and whether it’s worth it.
Whoop 5.0 vs Whoop 4.0: Key Specs
| Feature | Whoop 4.0 | Whoop 5.0 / MG |
|---|---|---|
| Release date | September 2021 | May 2025 |
| Battery life | 4–5 days | ~14 days |
| Size | Baseline | 7% smaller |
| Processor | Baseline | ~60% faster |
| Screen | None | None |
| ECG | No | Yes (MG only) |
| Blood pressure insights | No | Yes (MG only) |
| Healthspan / Whoop Age | No | Yes |
| Charging | Slide-on battery pack | Slide-on battery pack (new, smaller) |
| Membership | Legacy plan | One / Peak / Life tiers |
Battery Life: The Headline Upgrade
The single biggest complaint about the Whoop 4.0 was charging it every four or five days with a slide-on battery pack you inevitably misplaced. The Whoop 5.0 lasts around 14 days — roughly triple the 4.0 — thanks to a more efficient chip and better power management.
In practice, that means charging twice a month. For a device designed to be worn 24/7 for sleep and recovery tracking, fewer charging gaps also means fewer holes in your data. This is the upgrade current 4.0 owners feel on day one.
Design and Sensors
The 5.0 is 7% smaller than the 4.0 and sits flatter on the wrist, which improves comfort under sleeves and during sleep. Whoop says the processor is about 60% faster with upgraded sensor sampling, feeding more data into its strain, recovery, and sleep algorithms.
Neither band has a screen or buttons — that’s the Whoop philosophy. If you’ve never used one, our Whoop 4.0 review explains the screenless approach and who it suits.
Whoop MG: ECG and Blood Pressure
The Whoop MG (“Medical Grade”) is the same size as the 5.0 but adds:
- On-demand ECG — take a 30-second reading from the band to screen for atrial fibrillation
- Blood Pressure Insights — daily estimated systolic/diastolic ranges after a one-time cuff calibration
These are genuinely new capabilities for a screenless band and push Whoop toward health monitoring rather than pure athletic recovery. The MG is only available on the top-tier Life membership.
The New Membership Structure
Whoop scrapped its single membership for three tiers in 2025:
| Tier | Price | Hardware | What you get |
|---|---|---|---|
| Whoop One | $199/year | Whoop 5.0 | Core sleep, strain, recovery |
| Whoop Peak | $239/year | Whoop 5.0 | + Healthspan, Health Monitor, advanced insights |
| Whoop Life | $359/year | Whoop MG | + ECG, blood pressure insights |
Hardware is still included with membership — you never buy the band outright, though Whoop 5.0 bundles with a year of membership are sold on Amazon. If you’re unsure how Whoop’s subscription model works (or how to pause it), see our Whoop membership explained guide.
One sore point: Whoop initially suggested some 4.0 members would need to pay for upgraded hardware, then reversed course after community backlash — members with sufficient tenure got free upgrades to the 5.0. If you’re a long-time member, check your account before paying anything.
Healthspan and Whoop Age
Exclusive to the 5.0/MG on Peak and Life tiers, Healthspan estimates your “Whoop Age” — a physiological age score based on nine metrics including sleep consistency, VO2 max estimates, steps, and strain patterns. It updates weekly and tells you whether your habits are aging you faster or slower than the calendar.
It’s the most compelling software reason to upgrade: Whoop’s newest features are simply not coming to the 4.0.
Should You Upgrade from Whoop 4.0?
Upgrade to the 5.0 if:
- The 4-5 day battery drives you crazy (it did for us)
- You want Healthspan/Whoop Age and future features
- Your membership tenure qualifies you for free upgraded hardware
Go for the MG (Life tier) if:
- You have a family history of heart issues and want ECG on your wrist
- Blood pressure trends matter to your health picture
- The $359/year price doesn’t sting
Stick with the 4.0 if:
- You’re happy with basic strain/recovery and mid-cycle charging
- You’re near the end of your Whoop experiment anyway — in which case, compare alternatives in our Whoop alternatives guide
The Verdict
The Whoop 5.0 vs Whoop 4.0 comparison isn’t close on hardware: triple the battery, smaller body, faster chip, and exclusive software make the Whoop 5.0 the clear winner. The real decision is the membership tier — most people are best served by Peak at $239/year, while the MG’s medical features justify Life only if you’ll actually use ECG and blood pressure insights.
Wondering how Whoop stacks up against a smartwatch instead? Read our Whoop vs Apple Watch breakdown.