Ann: Somfit FDA cleared for USA market, page-17

Somfit seem to measure more things. Note below may not be correct but was just what I found online so please take with grain of salt.
Worthy though of more investigation regarding competitors. Apparently the the gold standard is polysomnography (PSG) and only Somfit seems to quote a % correlation.

	Feature	Somfit	against the gold standard of polysomnography (PSG)	Itamar WatchPAT One	ApneaLink Air
Type	Wearable HSAT	Portable HSAT	Wrist-worn HSAT	Compact HSAT
Data Collection	EEG/EOG, PAT, SpO2, pulse rate, snoring	Multi-channel physiological data	PAT, SpO2, heart rate	Airflow, SpO2
Ease of Use	Light, comfortable, mobile app control	Requires trained personnel	User-friendly	Minimal setup
Regulatory Approval	Yes (FDA cleared)	Yes (FDA cleared)	Yes (FDA cleared)	Yes (FDA cleared)
Primary Use	Home testing and clinical studies	Clinical & home use	Home use	Home use
Unique Features	Forehead-worn with EEG capability	Multi-sensor approach	Wrist-worn design with PAT technology	Nasal cannula technology
Cost-Effectiveness	Lower cost per study	Higher initial setup costs	Cost-effective for home testing	Affordable for home testing

	Device	Agreement with PSG	Kappa Statistic	Key Features
Somfit	76.14%	0.672	Forehead-worn EEG + PAT
Philips Respironics Alice	Not specified	Not specified	Multi-channel physiological data
Itamar WatchPAT One	High correlation	Not specified	Wrist-worn with PAT technology
ApneaLink Air	Limited details	Not specified	Compact design for airflow