How accurate is a phone at this, really?
A phone microphone can support specific acoustic tasks. The honest answer requires task-by-task evidence, production boundaries, and more than one metric.
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What I've been writing.
Plain-English articles on sleep breathing, phone-audio observations, validation, privacy, and where a wellness record stops. No "10 sleep hacks." Each article is designed to be read in a few minutes.
START WITH YOUR QUESTION
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Breathing & snoring basics
Start with the terms SomniSense uses and what your nightly patterns can — and cannot — tell you.
Explore this topic →Accuracy & privacy
Understand phone-based tracking, validation, and how your recordings stay under your control.
Explore this topic →Habits & experiments
Learn how tagged and untagged nights can be compared without turning an association into a causal claim.
Explore this topic →Wearables & comparisons
Learn why different sleep products measure different signals and should not be read as equivalents.
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Why your sleep audio never leaves your phone
Recording audio all night sounds invasive — until you realize nothing gets sent anywhere. Why SomniSense runs entirely on your phone, and why that's an engineering decision, not a slogan.
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What "validated against PSG" should tell you
A validation claim is only useful when it names the task, dataset, reference, and limits. Here is how to read that evidence in plain language.
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Cannabis, CBD, and sleep: what a tracker cannot conclude
A personal tag can organize nights for comparison. It cannot establish safety, efficacy, sleep-stage effects, or a biological mechanism.
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Apple Watch sleep stages and a separate sound record
A watch and a bedside phone observe different signals. Learn how to keep Apple Watch estimates separate from SomniSense acoustic events.
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Why nights vary — and why a tracker should not invent the cause
Room conditions and routines can be useful tags. A phone-audio record can compare nights, but it cannot identify temperature, cortisol, or a mechanism.
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Eight hours in bed and still tired? Duration is one clue
Time in bed and how you feel in the morning are different observations. A multi-night sound record can add context without identifying the cause.
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Weekend sleep looks different? Compare before explaining
Weekday and weekend nights may differ. Repeated observations can show a pattern, but a tracker should not assign the cause.
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Apple Watch sleep scores and BRI measure different signals
A watch score and SomniSense candidate acoustic-event rate are not equivalent measures and should not be used to validate each other.
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Why most sleep trackers don't tell you about your breathing
Wrist trackers measure what touches the wrist. They can't hear the room. That's not a failure — it's a physical limit. Here's the honest version.
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Wine and sleep: record the observation, not the cause
A wine tag can help compare nights. A phone-audio record cannot establish sleep quality, sleep-stage effects, or causation.
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Understanding BRI — and why it isn't exactly AHI
BRI is SomniSense's product-defined rate of candidate acoustic patterns per estimated sleep hour. It is not clinical AHI.
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Sleep apnea 101 — symptoms, evaluation, and phone-audio limits
A plain-English guide to common symptoms, why they are not specific, when professional evaluation matters, and what SomniSense cannot determine.
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