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What actually makes GutSense different.

Most gut-tracking today is manual, indirect, or wrist-based. GutSense is the only option that's passive, continuous, and gut-specific.

Product

Approach

Gut-specific

Passive

Wearable

Notes

GutSense

Passive acoustic patch

✓

Only continuous gut-specific wearable.

Oura / Whoop

Wrist/ring vitals

—

✓

Great for HRV & sleep. Zero gut signal.

Lumen

Breath CO₂

—

Not gut-specific. Requires daily active blowing.

FoodMarble

Breath hydrogen

✓

—

Needs active testing session. Not continuous.

SUNA (2027)

Abdominal meal tracker

✓

—

✓

Pre-revenue. No sensor IP moat.

Food diaries

Manual logging

✓

—

Compliance collapses within weeks.

Sources: SUNA (2022, UK), FoodMarble (2016, Ireland), Lumen (2014, IL/US), AbStats (2013, UCLA — validates the acoustic-sensing science but is a $15k+ clinical device), Oura (2013, Finland), Whoop (2012, US).