Our own assessment of a device we do not sell, weighted across six dimensions: accuracy 30 percent, coverage 20 percent, battery 15 percent, value 15 percent, comfort 10 percent, app and ecosystem 10 percent. Every score links to an independent 2024 to 2026 source.
Accuracy68
Excellent apnea screening and sleep/wake detection from a mattress sensor, but it overestimates total sleep and deep sleep and gives no true stage output, so it trails wearables on staging.
Against simultaneous polysomnography it hit AHI>=15 sensitivity 88.0% / specificity 88.6% (AUROC 0.926) and AHI>=30 86.0% / 91.2% (AUROC 0.954), but overestimated total sleep time by 25.8 minutes (7.0%) and does not provide sleep-stage analysis. JCSM 2021 PSG validation (n=118) ↗
Coverage & features62
For a contactless bed sensor it covers the core sleep story (duration, rough stages, heart rate, snoring, breathing, apnea trends) but nothing daytime, and independent testing flags soft staging accuracy.
In a four-device field comparison the Withings recorded deep sleep at 26.5% (vs the 13-23% healthy range) and users rated it accurate on only 46% of nights, the lowest of the four trackers tested. Frontiers in Computer Science 2022 field study ↗
Battery100
It plugs into the wall so it never needs charging and captures every night with zero battery management, the best possible outcome for this dimension.
The reviewer notes the mat has no battery and records sleep each night with no further input once set up, with the only power caveat being that it must stay plugged into a wall outlet. Sleep Foundation 2026 review ↗
Comfort95
It is fully contactless under the mattress with nothing to wear, so it removes the observer effect of a watch or ring while you sleep.
The tester wrote that the complete lack of physical contact was something they really enjoyed, and the thin, lightweight mat did not make the mattress feel uneven. Sleep Foundation 2026 review ↗
App & ecosystem65
The free Health Mate app is broad, integrating with Apple Health and 100-plus apps plus doctor sharing, but Withings support forums show recurring Apple Health sleep-sync remapping issues.
The Health Mate app integrates with Apple Health and over 100 other health-related apps and lets users share a sleep diary and health report directly with their doctor, all with no required subscription. Sleep Doctor 2026 review ↗
Value85
A one-time price with no subscription undercuts most sleep wearables and delivers clinically validated apnea and sleep trends, though the typical street price runs above the lowest listed figure.
The Sleep Foundation lists the mat at $130 with no subscription required, framed as a lot of functionality for an affordable sticker price, though Withings MSRP and Amazon list it higher (about $165 to $200). Sleep Foundation 2026 review ↗