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Last night before you are out of bed. Apple Health vitals, Face ID.
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FREE TOOLS
Free CPAP and sleep tools
These free CPAP tools help you check your sleep, choose equipment and make sense of your numbers. Each one shows its scoring, cites its source, and ends with clear next steps.
Free, no account needed. Sign in to save results and get retake reminders.
Sleep Check-up
0 of 6 checks done
- NoSAS (next)
- STOP-Bang (not started)
- Berlin (not started)
- Epworth (not started)
- Insomnia (not started)
- NOSE (not started)
- 0milestones earned
- 6checks in total
- 13free tools
Six short checks, one picture of how you sleep
Take them in any order and stop at any point. Each one finished adds a milestone; none of them grades you.
Not started
NoSAS scoreNeck, BMI, snoring, age and sex: a 0–17 apnea likelihood score.
Start →
Not started
STOP-BangYour STOP-Bang total, read against the published risk bands.
Start →
Not started
Berlin questionnaireSnoring, tiredness and blood pressure in three categories.
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Not started
Epworth Sleepiness ScaleHow sleepy you are in the day, tracked over months on CPAP.
Start →
Not started
Insomnia checkSleep Condition Indicator or Insomnia Severity Index; either one counts.
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Not started
NOSE scaleHow blocked your nose is, before you pick a mask.
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- Progress meterA quiet meter shows how far you have got, for example "3 of 6 checks done". You can take the checks in any order and stop at any point.
- Milestone badgesEach finished check adds a plain badge, such as "Nose check done". They mark progress; they do not grade you.
- Saved resultsSigned in to Apnealytics, your results are saved to your account so you can compare with last time. Without an account, every tool still works, but nothing is kept after you close the page.
- Retake remindersSome checks are worth repeating, for example sleepiness after a month on CPAP. If you opt in, we remind you when a retake is due, and the result shows how your score has moved.
Every tool, grouped by what it does
Screeners 7
- NoSASNoSAS score
Five quick questions on neck size, weight, snoring, age and sex.
/tools/nosas-scoreOpen →
- S–BSTOP-Bang
Enter your STOP-Bang total for the published risk level.
/tools/stop-bangOpen →
- BBerlin questionnaire
Snoring, daytime tiredness and blood pressure in three categories.
/tools/berlin-questionnaireOpen →
- ESSEpworth Sleepiness Scale
Enter your Epworth score to see what it means and track it on CPAP.
/tools/epworth-sleepiness-scaleOpen →
- ISIInsomnia Severity Index
Enter your ISI score to see the published severity band.
/tools/insomnia-severity-indexOpen →
- SCISleep Condition Indicator
Eight questions on your sleep over the past month.
/tools/sleep-condition-indicatorOpen →
- NOSENOSE scale
Five questions on nasal blockage, useful before choosing a mask.
/tools/nose-scaleOpen →
Equipment finders 2
- Mask finder
Seven questions point you to the mask type most likely to fit.
/tools/mask-finderOpen →
- Machine finder
A two-machine shortlist within your prescribed therapy type.
/tools/machine-finderOpen →
Calculators 2
- 21/30Compliance calculator
Check progress toward the 4-hour, 70 percent insurance rule.
/tools/compliance-calculatorOpen →
- WhBattery calculator
Runtime for your machine and battery, plus a trip plan and flight rules.
/tools/battery-calculatorOpen →
Lookups 2
- AHIAHI lookup
See where a sleep study or CPAP AHI falls.
/tools/ahi-lookupOpen →
- A–ZGlossary
Plain-English definitions of CPAP and sleep terms.
/learn/glossaryOpen →
Uses your dataA signed-in Apnealytics user can fill answers from their own therapy data, such as pressure P95 or last night's AHI.
Sourced, licensed and clear about limits
- Published scoringScreeners use the scoring and cut-offs from the original papers, shown in a table on each page.
- Cited sourcesEvery tool lists its sources by author, journal and year.
- Licensing respectedWhere a questionnaire is copyrighted, we either hold permission to show it or ask you to enter the score from your clinician's copy. Each page states the licence.
- No data kept unless you saveIf you are not signed in, your answers stay in your browser and are gone when you leave. Signed in, results are saved to your account and covered by our privacy and security practices.
- Clear limitsScreeners estimate likelihood. They cannot diagnose. Every result ends with practical next steps.
FAQ
Are these sleep tools really free?
Yes. Every tool on this page is free and works without an account. Signing in to Apnealytics, on the free plan or Pro, adds saved results, retake reminders and the option to fill answers from your own therapy data. Nothing on this page requires payment.
Can a quiz tell me if I have sleep apnea?
No. Screeners like NoSAS, STOP-Bang and Berlin estimate how likely sleep apnea is, based on published research. Only a sleep study and a licensed clinician can diagnose it. A higher-risk result is a good reason to talk to your doctor; a lower-risk result does not rule it out if you have symptoms.
Which check should I take first?
If you have not been diagnosed, start with NoSAS; it takes about two minutes and needs no score from anyone else. If you are already on CPAP, the Epworth and an insomnia check are useful for tracking how you feel over time. The NOSE scale is worth doing before choosing a mask.
What happens to my answers?
If you are not signed in, answers stay in your browser and are not stored. If you are signed in, completed results are saved to your Apnealytics account so you can compare them later. You can delete them at any time, along with the rest of your data.
Why do some tools ask me to enter a score instead of answering questions?
The Epworth Sleepiness Scale, STOP-Bang and Insomnia Severity Index are copyrighted questionnaires. Rather than reproduce them without permission, we ask for the total from the copy your clinician gave you and explain what it means. Where we have the right to show the questions, we do.
Already on CPAP? See what your machine records.
Apnealytics reads your SD card and shows AHI, leak, usage and pressure every night. Your first 30 nights are free.
Screening tools, not a diagnosis. A result here cannot tell you whether you have sleep apnea, insomnia or any other condition — only a licensed clinician can diagnose. If you are very sleepy during the day or have dozed while driving, see a doctor promptly.
