Dexcom Stelo vs Eight Sleep Pod 5
Two devices, the same questions: what does it actually measure, how good is the data, what does it cost to keep using, and who is it for.
Dexcom Stelo
The first over-the-counter continuous glucose monitor in the US. A 15-day skin-worn sensor that turns a black-box variable — your glucose response to food, stress and sleep — into a graph you can act on.
Full review →Eight Sleep Pod 5
A thermal mattress cover that heats or cools each side of the bed and tracks sleep contactlessly. The single highest-leverage sleep intervention for anyone whose bedroom runs warm.
Full review →| Spec | Dexcom Stelo | Eight Sleep Pod 5 |
|---|---|---|
| Price | Not sold in the UK — Abbott Lingo is the equivalent here, around £120/month | Around £2,000+ for the cover, plus roughly £19–39/month |
| Subscription | None (device is single-use) | Autopilot subscription for full features |
| Form factor | Skin-worn sensor, upper arm, 15 days per sensor | Water-circulating mattress cover, base hub, dual zones |
| Battery life | Sensor lifespan 15 days | Plug-in |
| Water resistance | Yes (shower/swim) | n/a |
| Platforms | iOS, Android | Same |
| Sensors |
|
|
| Metrics tracked |
|
|
| Data quality | MARD (mean absolute relative difference) in the ~10% range vs venous blood glucose — best-in-class for consumer CGM. Interstitial lag makes rapid spikes appear ~5 minutes late. | Sleep-stage classification is directionally reliable and improving. HRV is best interpreted as a personal trend, not compared to a chest-strap absolute. |
| Ecosystem | Native Stelo app; data export to Apple Health and Google Health Connect. Third-party integrations via Dexcom API and platforms like Levels, Nutrisense and Signos. | Eight Sleep app; syncs with Apple Health and Google Health Connect. Integrates with Oura and WHOOP for cross-source recovery views. |
| Privacy | Glucose data stored in Dexcom cloud; can be exported as CSV. HIPAA-aligned handling. | Data stored on Eight Sleep servers; account deletion and CSV export supported. |
Dexcom Stelo
- Otc — no prescription needed for non-diabetics in the US
- 15-day wear, waterproof, minimally invasive
- Turns diet and exercise into an immediate feedback loop
- Best-in-class sensor accuracy in the CGM space
- Not intended for insulin-dependent diabetics (see G7 for that)
- 15-minute readings vs 1-minute on G7 — smoother, less real-time
- Interstitial fluid lags blood glucose by 5–10 minutes
- Metabolic-optimisation users identifying personal glycaemic responses
- Anyone with pre-diabetes or a family history of type 2 diabetes
- People chasing zone-2 fitness or GLP-1 protocol optimisation
- Type 1 diabetics needing dosing decisions from the device
- Users unwilling to wear a visible sensor on the arm
Eight Sleep Pod 5
- Objectively lowers core body temperature and increases deep sleep for heat-sensitive sleepers
- Dual-zone temperature = no thermostat war with a partner
- Contactless HRV and HR tracking — no wearable needed
- Vibration and thermal wake alarms
- Expensive, and locked behind an ongoing subscription for automation
- Needs a nearby water hub and mains power
- Contact-free HRV is less accurate than a chest strap or ring
- Anyone who runs hot, sleeps in a warm bedroom, or has a temperature-mismatched partner
- Perimenopause / menopause thermal regulation
- Renters unable to set up a bulky hub
- Users on a strict budget
The lowest-friction way to turn glucose into an actionable metric. Non-diabetics should treat it as a 15–30 day learning tool, not a permanent wear.
If your bedroom is warm and you can absorb the cost, this is the highest-leverage sleep purchase available.
Other comparisons
Scores reflect our own testing criteria — data quality, what the device measures that matters for healthspan, and total cost of ownership including subscription. Prices are manufacturer list prices and change often; check before buying. Some links are affiliate links, which never affect a score — see our affiliate disclosure.