Nest Hub Sleep Tracking: 7-Day Test Results

If you let a Nest Hub watch you sleep for a week, you get a detailed breakdown of your sleep stages, duration, and disturbances, but the accuracy is mixed—it matched my sleep log about 80% of the time for bedtime and wake time, yet it struggled to detect brief awakenings. The Nest Hub uses Soli radar to track movement and breathing without a camera, and after seven nights, I found it useful for spotting trends but not a medical-grade sleep monitor.

How the Nest Hub Tracks Sleep

The Nest Hub (2nd gen) and Nest Hub Max use a low-energy radar sensor called Soli to detect your presence and movements on the bed. It does not use a camera or microphone for sleep tracking—privacy is a key selling point. The radar emits radio waves that bounce off your body, and the device analyzes the reflected signals to estimate your breathing rate and body motion. This data is processed on-device to classify sleep stages: light, deep, and REM sleep, plus awake time.

To enable sleep tracking, you must place the Nest Hub on a nightstand about 30 cm from your bed, with the sensor facing you. You also need to turn on “Sleep Sensing” in the Google Home app, which requires you to agree to share data with Google for personalized insights. The feature is free until March 2025, after which it may require a subscription, though Google has not announced final pricing.

My 7-Night Setup and Method

For the test, I used a Nest Hub 2nd gen in a bedroom with no other smart devices. I placed it on a nightstand 25 cm from my pillow, plugged in, and updated to the latest firmware. I enabled Sleep Sensing and set a consistent sleep schedule (11:30 PM–7:30 AM). Each morning, I recorded my perceived sleep quality, wake times, and any known disturbances (e.g., a cat jumping on the bed). I also wore a basic fitness tracker to compare rough sleep duration.

Over the week, I collected data on: bedtime and wake time, total sleep time, sleep stages (light, deep, REM), and sleep score (out of 100). I also noted any “sleep disturbances” the Hub flagged, such as coughing or snoring (if detected via audio, which is processed locally).

Results: What the Nest Hub Got Right

The Nest Hub was impressively accurate for sleep and wake times. Across seven nights, it detected my bedtime within 10 minutes of my actual time (I used a sleep diary) and wake time within 5 minutes. For total sleep duration, it averaged within 15 minutes of my fitness tracker, which is reasonable for a contactless device.

For sleep stages, the Hub’s distribution was plausible: I averaged 55% light, 20% deep, 25% REM, which matches typical adult patterns. On nights when I felt well-rested, the sleep score was higher (85–90), and on nights with known disruptions, it dropped to 70–75. The breathing rate trend also correlated with my perceived stress levels—higher on nights before deadlines.

Where It Fell Short

The main weakness was detecting brief awakenings. On two nights, I woke up for a few minutes (to use the bathroom) and the Hub recorded me as “awake” for only a minute or not at all, likely because my movements were minimal. It also missed a 20-minute middle-of-the-night reading session, instead classifying it as “light sleep.”

Another issue: the Hub sometimes confused my partner’s movements (when they were in bed) with mine, even though we placed it on my side. This led to inflated awake time on one night. The device is designed for one person, so co-sleeping degrades accuracy.

How to Read the Sleep Data

The Google Fit app (or Nest app) shows a sleep timeline with color-coded stages—light (blue), deep (dark blue), REM (purple), awake (gray). The “Sleep Score” is a composite of duration, regularity, and interruptions. A score above 80 is considered good, 60–80 fair, below 60 poor. Use the trends, not absolute numbers, to guide habits.

Common mistakes: ignoring the “time in bed” vs “time asleep” difference, over-relying on stage percentages (which are estimates), and forgetting that the Hub needs a clear line of sight—blankets or pillows blocking the sensor reduce accuracy.

Privacy and Data Handling

Sleep data is encrypted and stored in your Google account. You can delete it at any time via the Google Home app or myactivity.google.com. The audio for snore detection is processed on-device and not saved unless you enable “Snore & cough detection” in settings. The radar data is not stored in raw form—only derived metrics like breathing rate and movement. If you are uncomfortable with cloud processing, you can turn off “Sleep Sensing” entirely, but then you lose insights.

Alternatives and Costs

The Nest Hub costs around $100 (2nd gen) or $230 (Max). Alternatives include the Withings Sleep (a mat under your mattress, ~$130), Oura Ring (subscription-based, ~$300 + $6/month), or a smartwatch like Fitbit. The Nest Hub is unique for being contactless and screen-based, but it requires a Google account and works best for single sleepers. If you need medical-grade data, consider a clinical sleep study.

Frequently Asked Questions

Does the Nest Hub use a camera for sleep tracking?

No, it uses radar (Soli) and a microphone (optional for snore detection). The camera is only used if you enable “Sleep Sensing with camera” for presence detection, but that’s not required and can be turned off.

Can I use the Nest Hub if I share a bed?

Yes, but accuracy drops. The radar may pick up movement from your partner, leading to misclassified awakenings. It’s best to place the Hub on your side and avoid co-sleeping if you want reliable data.

Is the Nest Hub sleep tracking accurate enough for medical use?

No, it’s not a medical device. It’s designed for wellness insights, not diagnosing sleep disorders. If you suspect sleep apnea or other issues, consult a doctor and consider a polysomnography test.

How long does the free sleep tracking last?

Google announced that Sleep Sensing would be free until March 2025. After that, it may require a Fitbit Premium subscription (currently $10/month), but Google hasn’t confirmed final pricing. You’ll be notified before any changes.

Does the Nest Hub work without a Google account?

No, you need a Google account to set up the device and access sleep data. You can use it as a regular smart display without sleep tracking, but the feature requires cloud sync.

Related

• Raspberry Pi 90s Cable TV Recreation: How-To
• Apple Beats Pill Speaker: Is It Heavily Discounted?
• Raspberry Pi 32-Bit Support: What Still Works