Does SomniSense know which way I was sleeping?

No. There is no position sensor. You can tag nights when you intended to side-sleep, and Lifestyle Lab compares that tagged group with untagged nights as an observational association.

I try to sleep on my side but I roll onto my back.

SomniSense cannot verify whether you stayed on your side. A similar or different tagged-night average could reflect position, adherence, normal variation, or another factor.

Is there any downside to just trying it?

Comfort and individual health circumstances vary. SomniSense can organize observations, but it cannot determine whether side-sleeping worked for you.

Do you sell a positional device or recommend one?

No. SomniSense does not grade or endorse a positional product; it compares the nights you tagged with those you did not.

WITH · OBSERVATIONAL TAG COMPARISON

Compare side-sleep-tagged and untagged nights.

If you try side-sleeping, tag those nights and compare them with untagged nights. SomniSense shows the observed difference and sample size; it does not verify position or prove an effect.

Record with the phone on your nightstand and tag the nights you intended to sleep on your side. Lifestyle Lab™ compares that group with untagged nights and shows sample sizes. The result is an association, not proof of position, cause, or treatment effect.

Someone asleep on their side under a warm duvet, a smartphone glowing quietly on the nightstand — testing whether sleeping position changed their breathing.

Side / back

The comparison

tag it, and see if it moved

See + hear

Review the record

candidate regions + selected audio

Free fix

Low-risk to try

no gadget, no cost

Why side-sleeping is the first thing worth trying

Side-sleeping is commonly discussed in relation to snoring, but an app tag cannot verify body position, identify an airway source, or establish an effect for you.

If you choose to try it, compare several side-sleep-tagged and untagged nights as an observational record. SomniSense cannot tell whether you stayed on your side.

The honest part: this isn't a position sensor

I'm not going to tell you SomniSense knows which way you're facing — it doesn't, and I'd rather be straight about that than oversell it. What it does is measure your breathing and snoring from the nightstand. The position part is on you: you tag the nights you tried to sleep on your side.

Lifestyle Lab™ lines up side-sleep-tagged nights against untagged nights and reports the observed difference and sample sizes. It cannot verify position or isolate side-sleeping from other differences between nights.

How to test it

Record a few normal nights first. That's your baseline — however you usually sleep.
Then make a point of side-sleeping, and tag those nights. Use whatever keeps you there.
Give it time. More comparable nights add context, but no sample size turns the comparison into proof.
Read the result cautiously. A difference or no difference can reflect many recorded and unrecorded factors.

Review tagged-night observations — free

Free keeps core first-night evidence, 5 audio plays per night, and a recent 7-day trend · Pro adds longer continuity and fuller comparisons and reports.

Common questions

Does SomniSense know which way I was sleeping?: No. There is no position sensor. You can tag nights when you intended to side-sleep, and Lifestyle Lab compares that tagged group with untagged nights as an observational association.
I try to sleep on my side but I roll onto my back.: SomniSense cannot verify whether you stayed on your side. A similar or different tagged-night average could reflect position, adherence, normal variation, or another factor.
Is there any downside to just trying it?: Comfort and individual health circumstances vary. SomniSense can organize observations, but it cannot determine whether side-sleeping worked for you.
Do you sell a positional device or recommend one?: No. SomniSense does not grade or endorse a positional product; it compares the nights you tagged with those you did not.