Turn a Month of CPAP Nights Into a Compliance Strip You Can Hand Over — Free
The machine knows. You do not, unless you dig through a card slot or an app that wants an account. Clinics usually ask a blunt question at the review: are you getting four hours a night on most nights? This strip answers it from your own log — every night in date order, the ones under the floor flagged, the average across the month, and a line you can hand over or read out.
The proof surface
Free path: the strip computes locally in the browser with no key and no account. Where an AI step helps, any free chat assistant works — Google AI Studio's free tier and Groq's free tier were both no-card and rate-limited when this page was reviewed on 2026-09-13 (limits change; check before you rely on them).
Why the flat version breaks
A memory of 'most nights were fine' is not a compliance record, and a single bad week looks identical to a single bad night once a month has passed. Laying the same numbers out as dated marks against a floor turns an impression into a pattern with an average attached — which is what the review actually needs.
How to use the sleep-lab night strip in four passes
Most machines show usage hours on the screen or in their app for the last 7, 30 or 90 days. Write one line per night with the date first — a night you cannot find a number for is a night you leave out, rather than guess at.
Mask leak, a cold, travel, a pressure change. The strip flags the nights under the floor; the note is what turns a flag into something the clinic can act on.
Four hours on most nights is a common definition of compliance, but insurers and clinics differ, and some count a percentage of nights rather than hours. Use your own figure so the flags mean what your review means.
An average of 5.4 hours hides the two nights under three. The flagged nights plus their reasons are the part that changes the next prescription.
SAMPLE DATA, NOT A VERIFIED CLAIM: ResMed AirSense 11 · 24 Aug – 6 Sep 2026 · 6.4 h, 3.1 h, 5.8 h · floor 4 h · average across the fortnight shown on the seal. Replace these values with your own source before you rely on anything.
What breaks first
Logging hours you slept rather than hours the machine ran
They are different numbers, and the review is about the machine. A night where you took the mask off at 3am is a short night however long you slept.
Back-filling a month from memory
Reconstructed logs drift towards the average, which is exactly the shape the strip is supposed to break. Log the night in the morning, or pull the machine's stored record.
Reading a flag as a failure
A night under the floor is information about fit, pressure or a blocked nose. It is not a verdict, and changing the pressure yourself on the strength of one strip is not what this is for.
What you pay otherwise
| The usual route | What it leaves out | Cost |
|---|---|---|
| The machine's own app account | Data lives with the manufacturer, export is a support ticket | account plus a sync that stops working |
| A paid sleep-coaching subscription | Monthly coaching built on data you already own | recurring fee |
| Turning up to the review with nothing | The clinic re-reads the machine's data card and the appointment restarts | another 30-minute slot |
| This page + the free sleep-lab night strip | Computed in your tab, result on screen before you type anything | $0 |
Try the free sleep-lab night strip
Fourteen nights are already logged against a four-hour floor, with the two nights under it flagged and the average printed on the seal. Change the floor to 5 and the flags move.
Open the free sleep-lab night strip →Keep the work if you will use it again
Every night, both thresholds, the average and the flags, plus copy and share-link, with no account.
The on-screen result is free and repeatable forever. The one-time tier adds a tangible file you keep and the saved history that comes with it; it never removes or degrades the free result.
Boundary: This records the numbers you type in; it is not a diagnosis, it does not read your machine, and it must not be used to change pressure, mask or treatment on your own. Bring the strip to your clinician and let them interpret it.