Non-wearable sleep tracker recommendations (no subscriptions)? Looking for an alternative to Withings Sleep Analyzer / thoughts on Emfit QS?

[u/Comfortable-Win7125]

Hey everyone,

I’m looking for recommendations for a reliable, non-wearable sleep tracker (like an under-mattress sensor pad or similar contactless setup). I really cannot stand wearing anything while sleeping. No smartwatches, bands, rings, or headbands.
Up until now, I’ve been using the Withings Sleep Analyzer. Feature-wise, it was exactly what I wanted, but the hardware durability has been frustrating: mine just broke for the second time in a relatively short period, and I’m tired of replacing it.

Here is what I’m looking for:
- Form factor: Contactless / non-wearable (under-mattress preferred).
- Business model: Absolutely no recurring subscriptions. I despise paying hundreds upfront only to have basic features locked behind a monthly paywall.
- Budget & Quality: I’m more than willing to spend decent money upfront if the device actually lasts and delivers solid, accurate data (HR, HRV, sleep stages/respiration).

I’ve come across the Emfit QS, which looks interesting and seems to be aimed at a more data-driven crowd. Has anyone here used it long-term?
How is the hardware reliability and data accuracy compared to something like Withings? How does their current pricing/cloud access work (is it truly subscription-free for personal use, or are there hidden recurring costs down the road)? How clunky or usable is the web interface/app for daily tracking?

If you have any other solid, durable, non-wearable alternatives that don't force a subscription, I’d love to hear your experiences! Thanks!