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Sleep Tracker Sleep Analyzer (Withings)

Sleep Tracker

Sleep Analyzer (Withings)

£375.00

The Withings Sleep Analyzer is an under-mattress sleep tracking device that monitors your sleep without requiring anything on your wrist.

  • Tracks sleep cycles: light, deep, and REM without a wearable
  • Detects breathing disturbances that may indicate sleep disorders
  • Continuous heart rate monitoring throughout the night
  • Passive tracking improves long-term compliance and data consistency
  • Morning sleep score with granular cycle-by-cycle timeline
4.8(35 reflections)
1
Sleep TrackerSleep Analyzer (Withings)
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about this product.

The Withings Sleep Analyzer is an under-mattress sleep tracking device that monitors your sleep without requiring anything on your wrist. You place the thin sensor pad beneath your mattress, and it passively records throughout the night. It tracks sleep cycles — light, deep, and REM — alongside heart rate, breathing disturbances, and movement. The breathing disturbance detection is a clinically relevant feature: it flags irregular patterns that may warrant a conversation with a doctor, making this more than a simple sleep scorer.

The data feeds into a sleep score and a detailed timeline each morning, giving you specific information rather than a vague summary. You can see exactly where a disrupted night went wrong — a long REM deficit, fragmented light sleep, or elevated heart rate in the early hours. That specificity is what lets you act on the data, whether that means adjusting sleep timing, temperature, alcohol intake, or stress load.

This suits anyone who finds wearables uncomfortable at night, or who wants to track a partner's sleep without separate devices. It is equally useful for the serious athlete monitoring recovery and the professional trying to understand why their energy is inconsistent. Because it requires no nightly charging or wearing, compliance tends to be high — the data builds into a meaningful longitudinal record over weeks and months, which is where sleep tracking earns its value.

Under-mattress sleep tracking

how to take it

i.

Place the sensor pad under your mattress in line with your chest before going to bed. No manual activation is needed — the device starts and stops recording automatically. Sync the companion app in the morning to review your overnight data.

frequently asked.

Do I need to wear anything for this to work?

No. The sensor pad sits under your mattress and requires nothing on your body. This makes it well suited to people who find wristbands or rings uncomfortable during sleep.

What does the breathing disturbance detection actually measure?

The device monitors chest movement and sound to identify irregular breathing patterns during the night. It does not diagnose sleep apnoea, but it can flag disturbances worth discussing with a GP or sleep specialist.

Will it work on any mattress type?

The device is designed to work under most standard mattresses. Very thick or heavily layered mattresses may affect sensor sensitivity — check the Withings compatibility guidance before purchasing.

How is this different from a smartwatch that tracks sleep?

An under-mattress device removes the compliance problem: there is nothing to charge, put on, or forget. It also tends to be less affected by wrist movement artefacts, which can skew cycle-stage data on wrist-based trackers.

How long before the data becomes useful?

A single night gives you a baseline, but sleep tracking earns its value over weeks. Patterns in your REM consistency, breathing scores, and heart rate trends become meaningful once you have a longitudinal record to compare against.

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Customer reflections

Overall sentiment

4.835 reflections
1 – 6 of 35 reflections
QQVerified Buyer

The first adrenal support that made a quick difference.

4 days ago

Gentle on a sensitive stomach, and I feel like myself again. I had tried two other glandulars before this and neither sat right.

MRVerified Buyer

Steadier mornings within a fortnight.

1 week ago

I was sceptical about glandulars, but my mid-afternoon crash has genuinely eased. One capsule with breakfast and I forget about it.

ALVerified Buyer

Subtle, but real.

2 weeks ago

Not a stimulant, which is exactly what I wanted. It took about ten days, then I realised I wasn’t dreading the afternoon any more.

SKVerified Buyer

My clinician recommended it.

3 weeks ago

Bought after a blood panel flagged a flat cortisol curve. Easy to take, no jitters, and the sourcing is refreshingly transparent.

TPVerified Buyer

Recovery feels faster.

1 month ago

Training hard through a stressful stretch and this has helped me bounce back between sessions. Already on my second bottle.

DVVerified Buyer

Does what it says.

1 month ago

No frills, one ingredient, a sensible dose. I appreciate that it is designed to be used for a season rather than forever.

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