Science
Your gut is never still.
What moves it, what it sounds like, and the research AGNI builds on.
Rhythm
After a meal it mixes. Between meals it sweeps.
- 12
Squeezes a minute after a meal, near the start of the small intestine.
- 8
A minute near its end.
- 90 to 120
Minutes for one slow sweep between meals. Then it starts again.
Gut sounds
A busy gut is a noisy gut.
Gut sounds, also called bowel sounds, are made as your intestines move food along. They are a normal part of digestion. AGNI listens to them from the outside.
Source: MedlinePlus, Abdominal sounds. If gut sounds come with pain, or something feels off, see a doctor.
Research
The work we build on.
Independent studies of gut sounds, diaries and wearables. They are not studies of AGNI.
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Inderjeeth et al. (2018). The potential of computerised analysis of bowel sounds for diagnosis of gastrointestinal conditions: a systematic review.
Systematic Reviews. PMID 30115115.
PubMed: Inderjeeth et al., 2018 -
Yan et al. (2024). Diagnostic accuracy of computerized bowel sound analysis for irritable bowel syndrome: a systematic review and meta-analysis.
Chinese Medical Sciences Journal. PMID 38594814.
PubMed: Yan et al., 2024 -
Mansour et al. (2024). SonicGuard Sensor: a multichannel acoustic sensor for long-term monitoring of abdominal sounds.
Sensors, 24(6), 1843.
PubMed: Mansour et al., 2024 -
Dang et al. (2025). Flexible, wearable mechano-acoustic sensors for body sound monitoring applications.
Nanoscale, 17(16), 9652-9685.
PubMed: Dang et al., 2025 -
Wright-McNaughton et al. (2019). Measuring diet intake and gastrointestinal symptoms in irritable bowel syndrome: the Food and Symptom Times diary.
Clinical and Translational Gastroenterology, 10(12), e00103.
PubMed: Wright-McNaughton et al., 2019 -
Lackner et al. (2014). The accuracy of patient-reported measures for GI symptoms: a comparison of real time and retrospective reports.
Neurogastroenterology and Motility, 26(12), 1802-1811.
PubMed: Lackner et al., 2014 -
Chumpitazi et al. (2016). Bristol Stool Form Scale reliability and agreement decreases when determining Rome III stool form designations.
Neurogastroenterology and Motility. PMID 26690980.
PubMed: Chumpitazi et al., 2016 -
U.S. Food and Drug Administration (2026). General Wellness: Policy for Low Risk Devices.
Guidance document.
FDA guidance
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