Nightsong at a glance

What it is

• Nightsong is a sleep and snoring app from Somnus Technologies, Inc.
• Nightsong runs on iPhone, Apple Watch and iPad. Android is coming soon.
• It listens overnight from your nightstand and gives you one morning number, the Somnus Index™.
• The Somnus Index^™ is a 0 to 100 wellness score, built mostly from snore burden and breathing regularity.
• It is measured against your own baseline, never a stranger's average.
• No wearable required. Your phone is the sensor. An Apple Watch can add context but never gates it.

How it works

1. Plug the phone in and set it on the nightstand or mattress edge, within a few feet of your head.
2. Tap Start, or turn on Auto-start after a night or two.
3. Sleep. The phone listens and does the math on the device.
4. Wake to your Somnus Index, and watch your trend take shape over weeks.

60 held-out sleep-lab recordings, from an outside library of 287 expert-labeled overnight recordings. Every engine change is checked against them; none are used to train or tune it. Plain, fixed checks then throw out anything not loud enough or steady enough to be real.

• Partial: if only part of the night was heard well, the Index is marked Partial and reflects the stretch that was heard.
• No number: if the night was not heard well enough, Nightsong shows no number (NO READ) instead of a guess.
• Learning: the first nights read LEARNING while your baseline forms.
• Bands: 85 to 100 Strong, 70 to 84 Steady, under 70 Building.

More: How the Somnus Index works

Privacy

• Your recordings stay on your phone unless you choose to send them.
• Recording, analysis, and scoring happen on the phone.
• Optional sharing switches: Share and help improve Nightsong sends a summary of a few numbers from the night, with no name, no email, and no account handle, and no audio.
• The Village™ shares only your name, hours, score, snore number, and breathing rhythm, and only with people you invite.
• Your waitlist email is used to reach you and is never joined to your sleep data.
• The night is used to score the night. No ads. We do not sell your nights. Your audio never reaches us, so nothing is trained on it.
• The trade-off: Nightsong does not back up your audio, old nights cannot be re-scored from a saved copy, and the listening phone should stay plugged in.

More: What you can send, and what privacy costs

The principles behind it: How we work

Who it is for

• Adults who want a private, honest picture of their own snoring and breathing patterns over weeks and months.
• People who would rather see a trend against their own baseline than a single grade.

Who it is not for

• Anyone hoping it will replace a treatment, or show whether a treatment they already use is working.
• Anyone hoping the morning number will tell them whether something is wrong.
• If you have loud snoring with gasping, witnessed pauses in breathing, or heavy daytime sleepiness, see a doctor first.

More: Who Nightsong is not for

Real nights so far

• Beta testers have run 1,650+ nights and 11,700+ hours of overnight audio, analyzed entirely on their phones.

Price and beta status

• Price: Free during beta.
• Status: Nightsong is in a TestFlight beta, and the beta is full. We are not adding testers right now.
• How to get in: join the list and we will email you when a spot opens.
• Public launch: Coming soon.

Company

Nightsong is made by Somnus Technologies, Inc. Founder and CEO: Matt Cronin. Company site: somnustech.ai. Questions: contact us.

Somnus is a small team, on purpose. We own every line of code and every decision, and we answer for both.