Fitness Trackers / WHOOP MG (Life membership) vs Polar Loop (2025)
WHOOP MG (Life membership) vs Polar Loop (2025)
Polar Loop (2025)
WHOOP's format with Polar's science and no membership — but $200 and no GPS chip.
Wins overall by 1.6 points
Quick Verdict
A 1.6-point gap makes the Polar Loop (2025) the straightforward choice here. WHOOP's format with Polar's science and no membership — but $200 and no GPS chip.
The WHOOP MG (Life membership) and Polar Loop (2025) are both current-generation fitness Tracker models, and the Polar Loop (2025) is $159 cheaper than the WHOOP MG (Life membership) ($199.99 vs $359). On Subscription Freedom, the Polar Loop (2025) leads (9.5 vs 0.5/10) — the category's trap dimension: how much of what you paid for keeps working without a membership. A 10 means nothing is paywalled; a 1 means the hardware is unusable the moment you stop paying.. On Value, the Polar Loop (2025) leads (6.5 vs 3.5/10) — what the first year genuinely costs — purchase price plus any subscription needed for the advertised features.. On Health Features, the WHOOP MG (Life membership) leads (9.0 vs 6.5/10) — depth of the health sensor suite and how much of it is FDA-cleared and enabled in the US.. Overall, the Polar Loop (2025) scores 6.2/10 across our 8 scoring categories versus 4.6/10 for the WHOOP MG (Life membership). Below, we break down the full spec sheet, category-by-category scores, and exactly who should buy which one.
Side-by-Side Comparison
| Spec | WHOOP MG (Life membership) | Polar Loop (2025) |
|---|---|---|
| Price | $359.00 | $199.99 |
| Release Year | 2025 | 2025 |
| GPS | None — no GPS chip. Route and pace exist only if the phone comes with you | None — no GPS chip. The Polar Flow app can use the phone's GPS when you start an outdoor session manually |
| Display | None — screenless; every metric is app-only | None — screenless; everything is read in Polar Flow |
| Rated Battery Life ( days) | 4 | 8✓ |
| What the Battery Claim Assumes | '4+ days' from the band itself; the '14+ days' headline is the band plus the wireless PowerPack that the Life tier includes | Polar rates up to 8 days with continuous HR active; the band holds about four weeks of data if it goes unsynced |
| Subscription Model | Mandatory and top-tier only — the MG hardware exists only inside the $359/year Life membership and is not sold separately | None. Polar states full access to every feature from day one with no monthly fee — the explicit anti-WHOOP position |
| Annual Subscription Cost ($) | 359 | 0✓ |
| Water Resistance | WHOOP markets the band as swim-safe; no ATM or IP figure is published in the launch materials | WR30 — Polar rates it for bathing and swimming, a weaker rating than the 5 ATM bands here |
| ECG / AFib & FDA Status | FDA-cleared ECG and AFib detection. Blood Pressure Insights is NOT FDA-cleared — the FDA issued WHOOP a warning letter in July 2025 over marketing it without authorisation, and closed the letter in June 2026 only after WHOOP relabelled it as a wellness feature | No ECG hardware and no AFib detection |
| SpO2 Sensor | Yes — blood oxygen | Not listed by Polar for the Loop — the sensor package is optical HR, HRV and accelerometer |
| Phone Compatibility | iOS and Android | iOS and Android via Polar Flow |
| Charger | Wireless PowerPack included at this tier | Proprietary Polar Charge 2.0 USB-C cable (included) |
| Data Export | Member data download and a developer API while the membership is active | Strongest in the screenless class — Polar Flow exports sessions as TCX/GPX, offers a full account data export and a documented AccessLink API |
| Warranty | 12 months | 24 months |
| Colors | Onyx SuperKnit (additional bands sold separately) | Black, Greige, Blue |
Category Scores
Tracking Accuracy
The WHOOP MG (Life membership) and Polar Loop (2025) are level here, at 8.0/10 each. how closely steps, heart rate and sleep match reference devices — and how badly the optical sensor falls apart at high intensity. is not what separates these two — look to the categories where the scores diverge.
Subscription Freedom
The Polar Loop (2025) leads clearly here, 9.5 against 0.5 — a 9.0-point margin on the category's trap dimension: how much of what you paid for keeps working without a membership. A 10 means nothing is paywalled; a 1 means the hardware is unusable the moment you stop paying.. If that is what you are buying for, the WHOOP MG (Life membership) does not close the gap elsewhere.
Phone Independence
The Polar Loop (2025) leads clearly here, 2.5 against 2.0 — a 0.5-point margin on how much the device can do with the phone left at home — a real GPS chip and on-wrist readouts score high, connected-GPS screenless bands score low.. If that is what you are buying for, the WHOOP MG (Life membership) does not close the gap elsewhere.
Battery Life
The Polar Loop (2025) leads clearly here, 6.0 against 5.5 — a 0.5-point margin on real endurance once continuous heart rate, SpO2 and the always-on display are enabled, not just the headline figure.. If that is what you are buying for, the WHOOP MG (Life membership) does not close the gap elsewhere.
Display & Usability
The WHOOP MG (Life membership) and Polar Loop (2025) are level here, at 2.0/10 each. screen size, brightness and how much you can actually read on the wrist mid-workout. is not what separates these two — look to the categories where the scores diverge.
Health Features
The WHOOP MG (Life membership) leads clearly here, 9.0 against 6.5 — a 2.5-point margin on depth of the health sensor suite and how much of it is FDA-cleared and enabled in the US.. If that is what you are buying for, the Polar Loop (2025) does not close the gap elsewhere.
App & Data Portability
The Polar Loop (2025) leads clearly here, 8.5 against 6.5 — a 2.0-point margin on quality of the companion app and whether you can get your own data out in a documented format.. If that is what you are buying for, the WHOOP MG (Life membership) does not close the gap elsewhere.
Value
The Polar Loop (2025) leads clearly here, 6.5 against 3.5 — a 3.0-point margin on what the first year genuinely costs — purchase price plus any subscription needed for the advertised features.. If that is what you are buying for, the WHOOP MG (Life membership) does not close the gap elsewhere.
Best For
Choose the WHOOP MG (Life membership) if…
- • Health Features matters most to you — the WHOOP MG (Life membership) scores 9.0/10 here (depth of the health sensor suite and how much of it is FDA-cleared and enabled in the US.).
Choose the Polar Loop (2025) if…
- • Subscription Freedom matters most to you — the Polar Loop (2025) scores 9.5/10 here (the category's trap dimension: how much of what you paid for keeps working without a membership. A 10 means nothing is paywalled; a 1 means the hardware is unusable the moment you stop paying.).
- • Value matters most to you — the Polar Loop (2025) scores 6.5/10 here (what the first year genuinely costs — purchase price plus any subscription needed for the advertised features.).
- • App & Data Portability matters most to you — the Polar Loop (2025) scores 8.5/10 here (quality of the companion app and whether you can get your own data out in a documented format.).
- • Phone Independence matters most to you — the Polar Loop (2025) scores 2.5/10 here (how much the device can do with the phone left at home — a real GPS chip and on-wrist readouts score high, connected-GPS screenless bands score low.).
- • You want to spend less — it's $159 cheaper.
Pros & Cons
WHOOP MG (Life membership)
Pros
- +One of the very few wrist wearables with an FDA-cleared ECG and AFib detection
- +Everything Peak offers plus longevity/Healthspan metrics and priority support
- +Wireless PowerPack included, so the band never leaves your wrist
- +HSA/FSA eligible
Cons
- −$359/year, forever — the MG cannot be bought outright and stops working as a tracker when the membership lapses
- −The headline Blood Pressure Insights feature is explicitly not FDA-cleared and drew an FDA warning letter in July 2025
- −Early MG units suffered widely reported sensor failures within hours of setup in May 2025
- −No screen and no GPS chip despite costing more per year than most GPS running watches cost outright
- −The ECG contacts do not change the fact that Strain is still computed from wrist PPG, which degrades at high intensity
Polar Loop (2025)
Pros
- +Polar's sports-science pedigree — Nightly Recharge and SleepWise — with no subscription attached
- +Two band sizes in the box, so the fit problem is solved at purchase
- +Real data portability: TCX/GPX export, account export and a documented API
- +Two-year warranty, double the Fitbit and Amazfit norm
Cons
- −$199.99 for a screenless band with no GPS chip and no SpO2 — the $99.99 Amazfit Helio Strap does the same job
- −WR30 rather than 5 ATM, the weakest water rating in this comparison
- −8 days is the shortest battery life of any screenless band here
- −No ECG, no AFib detection, no FDA-cleared health feature
- −Polar Flow's interface is dated next to WHOOP's and Google Health's
Shop by Need
FAQs
Is the WHOOP MG (Life membership) or Polar Loop (2025) better overall?+
Based on our 8-category scoring, the Polar Loop (2025) comes out ahead overall. See the full breakdown in the scores section above — the right pick still depends on which categories matter most for your use case.
Which is better for Subscription Freedom, the WHOOP MG (Life membership) or the Polar Loop (2025)?+
The Polar Loop (2025) scores higher on Subscription Freedom (9.5/10 vs 0.5/10) — the category's trap dimension: how much of what you paid for keeps working without a membership. A 10 means nothing is paywalled; a 1 means the hardware is unusable the moment you stop paying..
Which is better for Value, the WHOOP MG (Life membership) or the Polar Loop (2025)?+
The Polar Loop (2025) scores higher on Value (6.5/10 vs 3.5/10) — what the first year genuinely costs — purchase price plus any subscription needed for the advertised features..
Which is better for Health Features, the WHOOP MG (Life membership) or the Polar Loop (2025)?+
The WHOOP MG (Life membership) scores higher on Health Features (9.0/10 vs 6.5/10) — depth of the health sensor suite and how much of it is FDA-cleared and enabled in the US..
Which is better for App & Data Portability, the WHOOP MG (Life membership) or the Polar Loop (2025)?+
The Polar Loop (2025) scores higher on App & Data Portability (8.5/10 vs 6.5/10) — quality of the companion app and whether you can get your own data out in a documented format..
Is the WHOOP MG (Life membership) worth the price difference over the Polar Loop (2025)?+
The Polar Loop (2025) is the cheaper option at $199.99 versus $359. Whether the pricier model is "worth it" depends on how much you value its lead in Subscription Freedom.
Which is better suited to my use case?+
The WHOOP MG (Life membership) is the better fit if you mainly care about screenless or sleep-recovery. The Polar Loop (2025) is the better fit for no-subscription.
What's the warranty on the WHOOP MG (Life membership) vs the Polar Loop (2025)?+
The WHOOP MG (Life membership) ships with a 12-month warranty; the Polar Loop (2025) ships with a 24-month warranty. Always confirm current terms on the manufacturer's site before buying.
Should I wait for the next model instead of buying either of these?+
If either model is more than two years old, a successor may be close — check the "Latest Model" link on each product page. Otherwise, both are current, well-supported options and there's no strong reason to wait.
Cheaper Option
Withings ScanWatch Light (37mm) — $249.95
Premium Option
WHOOP 5.0 (Peak membership) — $239.00
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.