Which fuel is the body burning right now?

Fat or carbohydrate: the signal is present in exhaled breath. Reading it reliably outside a laboratory is the open question.

Market & Team

Work in progress.

We are developing a breath analyzer that indicates, in real time, whether the body is drawing energy from fat or from carbohydrates. The programme is at prototype stage: sensor validation against clinical reference measurements, alongside user studies on how the reading is understood.

Where we are today

Breathome V2 development unit on a desk
Working hardware

V2 — Development units

Multiple units built for parallel development and iteration

Hardware

  • Working on V3 pendant — new sensor model selected, replacing the one used in V2.
  • Designing the 3D-printed pendant case to fit the updated components.

Software

  • New app in development — testing usability and user experience.
  • Iterating on the model that predicts fat metabolism from breath readings.

Validation

In lab testing, our sensor's raw voltage signal (orange) rose and fell in step with ketone levels measured from blood using a clinical-grade blood ketone meter (green) — across a full day of fasting, exercise, and meals. This close match is our strongest evidence yet that a simple breath sensor can track real-time metabolic state as reliably as a blood test.

Sensor voltage vs. blood ketones, paired readings across one day (after night, after exercise, and after food).

Chart comparing Breathome sensor voltage against blood ketone readings over the course of a day, showing strong correlation

Where we are headed

Concept design — not final hardware

Hardware — Gen 1 (Concept)

Wearable Breath Analyzer

See the product

A wearable device that detects breath biomarkers linked to fat metabolism. Connects via Bluetooth to the companion app. Available as necklace, wristband, or pocket carry.

WearableBluetoothUSB-C

This is a design concept for our next hardware generation — a visual direction, not a built or tested device.

Breathome concept device carried in a pocket
Breathome concept device worn on the wrist
Breathome companion app showing the fuel mix reading
Breathome concept pendant used to take a breath reading
Breathome concept device on a wristband used to take a breath reading

Concept renders — necklace, wristband, pocket carry, and the companion app.

Backed by Finland's innovation ecosystem

Supported by the leading Helsinki incubators, accelerators, and research partnerships in the Nordic startup scene.

Helsinki IncubatorsHelsinki IncubatorsMaria 01Maria 01TurbiiniTurbiiniEvolve2CareEvolve2CareENOLLENOLLInnovation CentreInnovation Centre

Let's build the future of metabolic health together

Whether you're an investor, a potential partner, or just curious about what we're building — we'd love to hear from you.

Location

Helsinki, Finland

We typically respond within 24 hours.