Piotr Sędzik

Piotr Sędzik

Open WearablesOpen Wearables
Founder @Momentum (www.themomentum.ai)
#872667893 followers42 following
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987 KP

About

CEO at Momentum - empowering the next generation of personalised health products through open infrastructure (Open Wearables OSS).

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Maker History

  • Open Wearables
    Open WearablesOpen infrastructure for wearable-powered health products.
    Apr 2026
    • 🎉
    Joined Product HuntJuly 8th, 2025

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Open Wearablesp/open-wearablesPiotr Sędzik•

9d ago

We plugged an LLM into raw health data. It just read the numbers back.

Something we noticed: LLMs are surprisingly bad at health data out of the box.

Give Claude or GPT a week of sleep and HRV data and you get "Your average HRV was 45ms, slightly lower than last week's 48ms." Cool, I can read a spreadsheet too.

Open Wearablesp/open-wearablesPiotr Sędzik•

9d ago

Wearable APIs charge per user. Here's what that costs at scale.

Quick math.

SaaS wearable APIs: $0.50-2.00 per user per month. Sounds fine at 100 users.

Open Wearablesp/open-wearablesPiotr Sędzik•

10d ago

Your Whoop says recovery 72%. What does that actually mean?

When your fitness app shows "Recovery Score: 72", do you know how it got that number?

With Whoop, Oura, Fitbit you don't. Black box. Can't audit it, can't tune it, can't verify it works for your users.

And it matters more than you'd think:

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