Fitness Trackers / Withings ScanWatch Light (37mm) vs WHOOP MG (Life membership)
Withings ScanWatch Light (37mm) vs WHOOP MG (Life membership)
Withings ScanWatch Light (37mm)
A month of battery in a steel watch case — with no ECG, no SpO2 and no GPS chip.
Wins overall by 1.7 points
Quick Verdict
The Withings ScanWatch Light (37mm) is the stronger all-round pick, ahead by 1.7 points. A month of battery in a steel watch case — with no ECG, no SpO2 and no GPS chip.
The Withings ScanWatch Light (37mm) and WHOOP MG (Life membership) are both closely matched fitness Tracker models, and the Withings ScanWatch Light (37mm) is $109.10 cheaper than the WHOOP MG (Life membership) ($249.95 vs $359). On Subscription Freedom, the Withings ScanWatch Light (37mm) leads (8.0 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 Battery Life, the Withings ScanWatch Light (37mm) leads (9.5 vs 5.5/10) — real endurance once continuous heart rate, SpO2 and the always-on display are enabled, not just the headline figure.. On Health Features, the WHOOP MG (Life membership) leads (9.0 vs 5.5/10) — depth of the health sensor suite and how much of it is FDA-cleared and enabled in the US.. Overall, the Withings ScanWatch Light (37mm) scores 6.3/10 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 | Withings ScanWatch Light (37mm) | WHOOP MG (Life membership) |
|---|---|---|
| Price | $249.95 | $359.00 |
| Release Year | 2024 | 2025 |
| GPS | Connected GPS at best — the Amazon listing advertises 'Connected GPS' using the phone, while Withings' own shop spec sheet does not list GPS at all. Sources conflict; either way there is no GPS chip in the watch | None — no GPS chip. Route and pace exist only if the phone comes with you |
| Display | Analogue hands plus a 0.63-inch grayscale OLED sub-display (282 PPI) | None — screenless; every metric is app-only |
| Rated Battery Life ( days) | 30✓ | 4 |
| What the Battery Claim Assumes | Sources conflict: Withings' own shop page claims up to 35 days, while the Amazon listing title and launch coverage say 30 days. No SpO2 sensor is drawing power | '4+ days' from the band itself; the '14+ days' headline is the band plus the wireless PowerPack that the Life tier includes |
| Subscription Model | Optional — Withings+ adds cardiologist ECG review, the AI Health Assistant, NutriCare and Readiness scoring. One month is included. Withings does not publish the Withings+ price on its US product or subscription pages | Mandatory and top-tier only — the MG hardware exists only inside the $359/year Life membership and is not sold separately |
| Annual Subscription Cost ($) | Not published on Withings' US Withings+ page | 359 |
| Water Resistance | 5 ATM / 50 m, swimproof | WHOOP markets the band as swim-safe; no ATM or IP figure is published in the launch materials |
| ECG / AFib & FDA Status | No ECG on the Light — Withings reserves ECG and AFib detection for ScanWatch 2 and Nova. The cardiologist ECG review sold under Withings+ therefore does not apply to this model | 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 |
| SpO2 Sensor | No — Withings explicitly omits the SpO2 sensor on the Light | Yes — blood oxygen |
| Phone Compatibility | iOS and Android via Withings Health Mate | iOS and Android |
| Charger | Proprietary magnetic puck | Wireless PowerPack included at this tier |
| Data Export | Health Mate offers a full account data export in CSV, and Withings publishes a developer API | Member data download and a developer API while the membership is active |
| Warranty | 24 months | 12 months |
| Colors | Black & Silver, White & Rose Gold, Green, Blue | Onyx SuperKnit (additional bands sold separately) |
Category Scores
Tracking Accuracy
The WHOOP MG (Life membership) leads clearly here, 8.0 against 7.0 — a 1.0-point margin on how closely steps, heart rate and sleep match reference devices — and how badly the optical sensor falls apart at high intensity.. If that is what you are buying for, the Withings ScanWatch Light (37mm) does not close the gap elsewhere.
Subscription Freedom
The Withings ScanWatch Light (37mm) leads clearly here, 8.0 against 0.5 — a 7.5-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 Withings ScanWatch Light (37mm) and WHOOP MG (Life membership) are level here, at 2.0/10 each. 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. is not what separates these two — look to the categories where the scores diverge.
Battery Life
The Withings ScanWatch Light (37mm) leads clearly here, 9.5 against 5.5 — a 4.0-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 Withings ScanWatch Light (37mm) leads clearly here, 5.0 against 2.0 — a 3.0-point margin on screen size, brightness and how much you can actually read on the wrist mid-workout.. If that is what you are buying for, the WHOOP MG (Life membership) does not close the gap elsewhere.
Health Features
The WHOOP MG (Life membership) leads clearly here, 9.0 against 5.5 — a 3.5-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 Withings ScanWatch Light (37mm) does not close the gap elsewhere.
App & Data Portability
The Withings ScanWatch Light (37mm) leads clearly here, 8.0 against 6.5 — a 1.5-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 Withings ScanWatch Light (37mm) leads clearly here, 5.5 against 3.5 — a 2.0-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 Withings ScanWatch Light (37mm) if…
- • Subscription Freedom matters most to you — the Withings ScanWatch Light (37mm) scores 8.0/10 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.).
- • Battery Life matters most to you — the Withings ScanWatch Light (37mm) scores 9.5/10 here (real endurance once continuous heart rate, SpO2 and the always-on display are enabled, not just the headline figure.).
- • Display & Usability matters most to you — the Withings ScanWatch Light (37mm) scores 5.0/10 here (screen size, brightness and how much you can actually read on the wrist mid-workout.).
- • Value matters most to you — the Withings ScanWatch Light (37mm) scores 5.5/10 here (what the first year genuinely costs — purchase price plus any subscription needed for the advertised features.).
- • You want to spend less — it's $109.10 cheaper.
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.).
- • Your main use case is screenless.
Pros & Cons
Withings ScanWatch Light (37mm)
Pros
- +A month or more per charge, by far the longest run time in this comparison
- +Stainless steel and real analogue hands — it passes as a watch, not a fitness band
- +CSV account export and a public API make your data genuinely portable
- +Two-year warranty and HSA/FSA eligibility
Cons
- −$249.95 buys no ECG, no SpO2 and no GPS chip — the 'Light' name is doing a lot of work
- −Sources conflict on both battery life (30 vs 35 days) and whether connected GPS is supported at all
- −The Withings+ features most people want, including cardiologist ECG review, need hardware this model does not have
- −Withings does not publish the Withings+ price on its US pages, so the real cost of ownership is unclear at purchase
- −The 0.63-inch grayscale sub-display shows very little at a glance
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
Shop by Need
FAQs
Is the Withings ScanWatch Light (37mm) or WHOOP MG (Life membership) better overall?+
Based on our 8-category scoring, the Withings ScanWatch Light (37mm) 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 Withings ScanWatch Light (37mm) or the WHOOP MG (Life membership)?+
The Withings ScanWatch Light (37mm) scores higher on Subscription Freedom (8.0/10 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 Battery Life, the Withings ScanWatch Light (37mm) or the WHOOP MG (Life membership)?+
The Withings ScanWatch Light (37mm) scores higher on Battery Life (9.5/10 vs 5.5/10) — real endurance once continuous heart rate, SpO2 and the always-on display are enabled, not just the headline figure..
Which is better for Health Features, the Withings ScanWatch Light (37mm) or the WHOOP MG (Life membership)?+
The WHOOP MG (Life membership) scores higher on Health Features (9.0/10 vs 5.5/10) — depth of the health sensor suite and how much of it is FDA-cleared and enabled in the US..
Which is better for Display & Usability, the Withings ScanWatch Light (37mm) or the WHOOP MG (Life membership)?+
The Withings ScanWatch Light (37mm) scores higher on Display & Usability (5.0/10 vs 2.0/10) — screen size, brightness and how much you can actually read on the wrist mid-workout..
Is the Withings ScanWatch Light (37mm) worth the price difference over the WHOOP MG (Life membership)?+
The Withings ScanWatch Light (37mm) is the cheaper option at $249.95 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 Withings ScanWatch Light (37mm) is the better fit if you mainly care about no-subscription or everyday-steps. The WHOOP MG (Life membership) is the better fit for screenless.
What's the warranty on the Withings ScanWatch Light (37mm) vs the WHOOP MG (Life membership)?+
The Withings ScanWatch Light (37mm) ships with a 24-month warranty; the WHOOP MG (Life membership) ships with a 12-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 MG (Life membership) — $359.00
Specifications and prices for both products last verified . Scores are calculated from published specifications — see how we compare products.