These are valid points but the upside of vr is still much bigger than the current downsides. The ability to explore worlds as if you're actually there is something no other medium really offers.

if you're experimenting with hrv/biofeedback then you might find Aidlab 2 interesting, it gives RR + GSR in one wearable (fyi I am the author)

yes,, render feels like the most natural next step right now (similar mental model). Still kind of nostalgic about Heroku, had really good times with it.

Same here! Still on a streak since day one

hey guys, we’ve had a chance to chat a few times. Fingers crossed for your launch here. Have you thought about Show HN? Your product is clearly needed, and I’ll always support standardization /open standards.

by tracking sleep, what exactly do you mean by that? sleep phases, sleep score, sleep duration?

Yes to all.

Cool, but it's still unusable for me. Somehow all my prompts are violating the rules, huh?

In 25 years we'll reminisce on the times when we could find a human artist who wouldn't impose Google's or OpenAI's rules on their output.

the open-source models will catch up, 100%

Open models don't seem to be catching up the LLM-based image gen at this point.

ChatGPT's imagegen has been released for half a year but there isn't anything remotely similar to it in the open weight realm.

Give it another 50 years. Or maybe 10. Or 5? But there's no way it won't catch up.

Are you asking it to recreate people?

No, and no nudity, no reference images. Example: 'athlete wearing a health tracker under a fitted training top'

Can you give us an example?

'athlete wearing a health tracker under a fitted training top'

Failed to generate content: permission denied. Please try again.

It's not the censorship safeguard. Permission denied means you need a paid API key to use it. It's confusing, I know.

If you triggered the safeguard it'll give you the typical "sorry, I can't..." LLM response.

Have some examples?

Previous one: https://news.ycombinator.com/item?id=36583419 (2023)

Congrats guys on your release. I tried new VitalLens side by side with my medical grade tracker (Aidmed One) but the respiration numbers were quite off.

Curious if you've done any comparisons against actual hardware (chest-based or contact PPG), or if validation is mostly dataset based for now.

Thanks! Curious under what circumstances the respiration was off - were you standing or sitting down? I can usually see the resp wave go up and down as I breathe while sitting down.

I have written up a technical report on the validation here: https://arxiv.org/abs/2510.27028 This validation is based on several datasets, which all have gold standard ground truth from contact PPG and RESP from chest straps and/or impedance pneumography (from ECG)

> It's not sexy, and as a result an overwhelming majority of the population is unaware about how to avoid succumbing to it

When I started building an ECG Holter in my early 20s, I tried to get some friends to use it and kept hearing "yeah, but it’s not exactly sexy to wear that thing." That’s when it hit me how little people care about prevention until something goes wrong. We still have a huge awareness gap to close.

I asked a heart doctor for a calcium scan. He said I didn't need that, but he wanted me to wear a Holter monitor for a few days (reasons unknown). I did not.

That was years ago. I have different doctors now but still no calcium scan. Time to ask again possibly.