Sleep Delta
Sleep Delta analyses your responses across Sleep Duration, Sleep Regularity, Sleep Latency, Sleep Continuity, Daytime Alertness, Sleep Timing & Chronotype, and Sleep Satisfaction — plus screening questions that flag patterns worth a professional conversation.
Answer honestly — the more accurate your answers, the more precise your results.
After the quiz, you will receive your overall sleep score out of 100 — as well as a breakdown of how you scored across each of the key sleep domains.
Your responses are private and never sold or shared.
Before you start
Grounded in research
Our seven domains align to the RU-SATED sleep health framework used in sleep research. The questions are our own, written in plain language and refined with expert review.
Honest about limits
Sleep Delta is a screening and education tool — it doesn't diagnose sleep conditions. If your answers show patterns worth a professional conversation, we say so and point you to a GP.
Private by default
No account, no device, no data sold. Your answers are used to score you — and only ever used in aggregate research if you explicitly opt in.