What your score means, what moves it, and how to read your week.
One night tells you what happened; a score and a weekly view tell you whether it matters. Snore Timeline condenses each night into a 0 to 100 sleep score, then rolls your nights into a Weekly Summary that compares this week to last. This page explains how the score is built, what each supporting metric measures, and how to use sleep factors to test what changes your nights. Everything here comes from recorded sound and any synced wearable data; none of it is a medical assessment.
The sleep score sits on a 0 to 100 scale and reflects your overall sleep quality for the night. Scores fall into four bands: Excellent (90 to 100), Good (75 to 89), Fair (60 to 74), and Poor (below 60).
Duration carries the most weight. The app treats 7 or more hours of sleep as ideal, and sleeping less than 7 hours starts to reduce the score, with bigger drops the shorter the night. Beyond duration, the score weighs:
Tap the score badge to see a detailed breakdown of how each factor affected your night. Treat the score as a guide to your sleep habits, never as a clinical diagnosis.
Synced wearables can change the score too. When the app syncs sleep data from Apple Health, any nights that also have a recording are re-analyzed so the score can use the Deep and REM stages from your wearable, which beat audio estimates for accuracy. That means a night's score may refine itself once your Apple Watch finishes finalizing its staging and the data reaches the app. Apple Watch & Wearables covers the sync.
After each recording, the app builds a nightly summary so you can take in the whole night at a glance. It shows your sleep score with its band, a breakdown of time spent in Light, Deep, REM, and Awake stages, your average respiratory rate in breaths per minute, and your snoring and breathing disruption activity. Tapping the score badge expands the factor-by-factor breakdown showing what helped and what hurt.
The summary works as an at-a-glance read on your habits and trends, while the timeline remains the place to dig into individual sounds.
Sleep Efficiency answers a precise question: of the time you spent in bed, how much did you spend asleep? The app divides time asleep by total time in bed and reports the percentage. High efficiency means you fell asleep fast and stayed asleep with little time awake in bed; low efficiency means the recording contains a lot of wakefulness.
Snore Timeline rates the percentage on five levels:
The Weekly Summary shows efficiency as a weekly average, which smooths out the odd restless night and gives you a steadier signal than any single recording.
WASO stands for Wake After Sleep Onset: the total time you spent awake after first falling asleep. Efficiency tells you how much of the night you slept; WASO tells you how broken that sleep was once it started. Two nights with identical efficiency can feel different if one packed its wakefulness into a single stretch and the other scattered it across the night.
The app rates WASO in five tiers:
Lower WASO points to more continuous sleep. Like every metric on this page, it serves personal insight, not clinical measurement.
Going to bed at a regular hour matters enough that the app scores it on its own. The Consistency Score reflects how regular your bedtime has been over the last 14 days, based on how much it varies from night to night. A 1-hour buffer applies: variation up to about an hour still scores 100, and the score drops as your bedtimes spread out further.
The app takes each night's bedtime from your earliest recording start time, so starting the recording when you get into bed keeps this metric honest. The Weekly Summary also shows your average Bedtime across the week.
If you use a Recording Delay to skip your wind-down time, start the session at the same point in your routine each night. Consistency measures the recording start, and a steady ritual keeps the measurement meaningful.
Sleep Deficit appears in the Weekly Summary and shows the gap between how much you slept and a 7-hour nightly target, totaled across the whole week. A positive number means you fell short of the target over the week; a negative number means you slept more than the target, a sleep surplus.
It works alongside Time Asleep, which shows your average nightly duration for the week. The two answer different questions: Time Asleep tells you what a typical night looked like, while Sleep Deficit tells you what the whole week added up to. A few short weeknights can hide inside a decent average yet still leave a deficit you can see at a glance.
Sleep factors turn your recordings into experiments. You tag what you did, the app compares tagged nights against untagged ones, and patterns emerge from your own data instead of guesswork.
The app includes 23 built-in factors across four categories:
If the list misses something, create a custom factor by giving it a name and choosing one of those four categories. You tag factors on your nightly summaries, and tagging selectively is the whole trick: only tag a factor on nights you had it. Tag something every single night and there are no factor-free nights left to compare against, so no correlation can appear.
Correlations need data before they mean anything. To unlock the comparison for a factor you need at least 5 total recorded nights, with at least 2 nights tagged and at least 2 nights without the tag. Until you cross those thresholds, a Building Insights state shows a progress bar toward unlocking, how many more nights you still need, and the factors you have tracked so far. The app looks back over your last 8 weeks of data to build the patterns, and more nights make the results more confident.
Once unlocked, each factor card in the "What Affected Your Sleep" section of the Weekly Summary carries a plain-language verdict based on an impact score: Better sleep means the factor is associated with improvement in your data, Worse sleep with a decline, and No clear effect means the difference between your with and without nights was too small to call.
Tap a card to expand a side-by-side comparison of nights with the factor versus nights without it. The expanded card compares Snore Time, Events per Hour, Disruptions, and Sleep Talking time, then, under a Sleep Quality heading, Sleep Score and Sleep Efficiency. Each metric appears for both groups with small bars so you can see which set of nights came out ahead, and the card lists how many nights fell into each group, for example "4 nights with · 6 without".
A concrete example: CPAP is a built-in factor. Tag it on the nights you used your machine and leave other nights untagged. After 5 total nights with at least 2 in each group, the CPAP card shows whether your machine nights carried less snore time, fewer disruptions, and a higher score. The Breathing Disruptions page and the Test a Remedy guide walk through this workflow in full.
Correlations show patterns in your own recordings and may reflect other habits happening at the same time. Treat them as personal insight to discuss with your doctor, never as cause-and-effect or a diagnosis.
The Weekly Summary gives you a 7-day overview of your snoring and sleep data and compares it against the previous week. Each metric shows a week-over-week change, as a percentage for most metrics; Peak Volume, measured in decibels, shows the difference in dB instead. When the previous week had no data, the change reads 0% in a neutral color rather than flagging a trend that does not exist. Daily charts plot each metric across the last 7 days so you can see the shape of the week, not just its total.
The summary averages a wide set of metrics:
Your average Sleep Score for the week appears with its own week-over-week change and a 7-day chart, so you can watch the score move night by night instead of judging a single morning.
To answer the question most people open this screen for, "is my snoring getting better or worse", watch three numbers: Snore Time (total time spent snoring), Snoring Signals (the total count of snore-related events including snoring, coughs, gasps, and disruptions), and Signals Per Hour (signals detected per hour of recording). A downward trend in these from one week to the next means less snoring activity overall, and the daily charts show which nights drove the change.
These are personal-insight metrics for tracking patterns over time. For sharing them with a doctor, Export & Sharing shows how to turn a week of data into a report.
