Calibre Biometrics

Reaching out to our network with a to share an immediate investment opportunity with Calibre Biometrics, Inc. www.calibrebio.com

As the Chief Evangelist and a founding team member since the beginning, over four years, I am excited to highlight our groundbreaking wearable breath-measurement device. This innovative technology delivers true metabolic and respiratory lab-grade data anywhere, anytime.

Our device is designed for athletes, biohackers, wellness enthusiasts, and healthcare professionals who can greatly benefit from real-time respiratory measurements. Existing solutions are often expensive, stationary, and complex, but Calibre offers a lightweight, affordable, and externally validated device that makes breath analytics accessible to the mass market.

With revenue accelerating, we are preparing for our Series A in 2026 and are currently raising a bridge round to support our next stage of growth. This funding will provide the necessary capital to increase manufacturing capacity. We are offering attractive terms for interested investors, with a minimum check size of $50K.

Our recent success has led to overselling on our stock, establishing demand. We are looking to overcome this growth challenge and lean in to our profitable business model

If you are interested in participating in this bridge/angel funding round, please reach out. Either I or our Founder, Udi Meirav, would be happy to discuss our product and business in detail.

We aim to close this round in less than 30 days and plan to keep the process simple with a convertible note featuring excellent terms. We appreciate sincere interest in investing.

For those seriously interested, we can share a detailed deck. You can contact me directly at [email protected] to get started.

Unlock the data in your breath! Unlock real-time respiratory & metabolic insights with Calibre—a wearable built for performance, longevity, and personalized health optimization.

No tangle of tubes.
No treadmill stress test.
No $300 lab invoice.
 
Just you, your breath, and a device 
that fits in your hand.
 
Calibre delivers real-time metabolic 
and respiratory data — VO₂, RMR, 
respiratory rate, calorie burn, and 
more — using the gold-standard 
method: indirect calorimetry.
Anywhere. Anytime. No guesswork.
 
   
 
   
   

We get this question quite often. And the answer is simple. Lab-grade accuracy. Zero lab required.

📊 Validated against top-tier lab carts, Calibre matches their precision for VO₂, VCO₂, RER, and more—without the hoses, tech teams, or $30K price tags.

Whether you’re coaching Olympic hopefuls or hacking your metabolism at home, you deserve data you can trust. Not approximations. Not estimates. Real numbers, breath by breath.

💡 Think: metabolic cart in your pocket.