You tried one change. Do your nights look different?

Remember what was different—not just how the morning felt.

Make a quick note before bed.

Tag what was true tonight: a routine you already chose, a busy day, or another context you want to remember.

See the groups beside each other.

Pro shows the readings and available sample sizes for tagged and untagged nights. Breathing comes first; snoring adds another layer.

Keep following what interests you.

See whether an observed difference appears again as your own record grows, without relying on a memory of isolated mornings.

About 30 seconds before bed

Tap what's true tonight. It takes about as long as setting an alarm. Six factors you might want to tag:

🍷 alcohol  ·  ☕ late caffeine  ·  😰 stress  ·  🍽️ large meal  ·  💊 existing prescribed medication  ·  🏃 a hard workout

Examples of routines or existing care you might record:

🛌 intended side-sleeping  ·  📐 usual head elevation  ·  👃 clinician-directed nasal spray  ·  🪶 usual pillow  ·  😷 prescribed CPAP use  ·  🧘 wind-down routine. Record existing care as context; do not start, stop or change treatment to create an app comparison.

Your recording keeps the tags you chose alongside its observations. Breathing results follow your first-experience and Pro access.

Factor comparisons use the latest 14 qualifying recording days. Each metric needs at least 3 available readings in both the tagged and untagged groups. The untagged group includes unanswered or unknown tag information; it does not prove that the behavior was absent.

Tagging is in the free tier. Factor comparison is a Pro view. More comparable nights generally provide better context, but no fixed number of nights makes an observational comparison causal.

A difference to follow, with the context kept beside it.

The app keeps your chosen tags with the recording. When both groups have enough readings, you can compare them and return to the nights behind the result. You decide what deserves more observation.

Read the two group means alongside their available sample sizes. Unanswered or unknown tags belong to the untagged group; they do not prove that the behavior was absent.

A clue to keep observing.

A comparison shows an association, not proof that a change worked. Other routines, recording conditions and ordinary variation may differ too. Record existing prescribed care as context; do not change medication or CPAP to create an app comparison.