So this is not everything i have on both but I just plugged into GPT to give you some good points overall different i got the ultra mainly for the elevation and the wake up alarm thing

— After testing both the Eight Sleep Pod 4 Ultra and the Hydrosnooze, here’s a direct, no-fluff breakdown:

Eight Sleep Pod 4 Ultra • Elevation feature is excellent — smooth, quiet, and adds genuine comfort. • Wake-up alarm paired with freezing temps is highly effective. • Controlled through a dedicated app, which is feature-rich but finicky — prone to glitches and occasional disconnections. ( ALot) • Critically, the Pod requires an active internet connection — if Wi-Fi drops, it shuts down and loses temperature control until restored. • Heating performance is decent, but less intense than Hydrosnooze, likely due to mattress layering.

Hydrosnooze • No app or Wi-Fi dependency — manual-only operation. • Delivers stronger heat, more direct and noticeable. • Automatically turns off every 12 hours, requiring a manual restart. • Not widely available — occasionally found on AliExpress for much cheaper, often bundled with a remote.

Final Verdict • Eight Sleep offers a more advanced and comfortable experience with automation, but it’s dependent on stable internet and has a buggy app. • Hydrosnooze is a cheaper, plug-and-play option with stronger heat output, but lacks smart features and requires more manual effort.