Siyan Somnus

Support

Last updated 10 November 2026

Siyan Somnus is a sleep-wellness app for iPhone and Android from Siyan Clinical Corporation. It gives you a sleep diary, a sleep window worked out from your own nights, an eight-week guided plan, a library of narrated stories and soundscapes, and an AI sleep coach you can type to or speak with.

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Common questions

How do I cancel my subscription?

Through the store that bills you, not through us — we cannot cancel it on your behalf.

• iPhone or iPad: Settings → your name → Subscriptions, or apps.apple.com/account/subscriptions. Apple's instructions are at support.apple.com/en-us/HT202039.
• Android: Google Play app → your profile picture → Payments and subscriptions → Subscriptions, or play.google.com/store/account/subscriptions. Google's instructions are at support.google.com/googleplay/answer/7018481.

Cancel at least 24 hours before the period ends, or the next renewal will already have been taken. Cancelling stops future charges; you keep access until the end of the period you have paid for.

How do I delete my account and my data?

In the app: Profile → Privacy and security → Delete my account. You will be asked to tick a box and confirm once more, because it cannot be undone.

If you no longer have the app installed, email support@siyanclinical.com from your account's email address and ask us to delete it. Full details, including exactly what is deleted and what is kept, are on the account deletion page.

Deleting your account does not cancel your subscription. Cancel in the store first, then delete.

Why does Somnus ask for Apple Health or Health Connect?

So you do not have to type in last night by hand, and so the app can see more than you would reasonably log yourself. With permission, Somnus reads from Apple Health on iPhone or Health Connect on Android: time asleep and time in bed, sleep stages and the awake stretches inside a night, heart rate, heart-rate variability, respiratory rate, blood oxygen, body or skin temperature, steps, active energy, workouts, and — on iPhone — mindful minutes. Steps and workouts are there because what you did during the day moves your sleep more reliably than anything a tracker records about the night itself.

Two things worth knowing:

• Somnus only reads. It never writes anything into Apple Health or Health Connect. Nothing you log in Somnus appears in your health app.
• It is optional and reversible. You can decline it, grant part of it, or withdraw it later in your phone's own settings. Declining does not lock you out — you keep a diary by hand instead.

My sleep did not import. What do I do?

Go to Profile → Wearables and health data. The screen says whether you are connected and when the last import ran, and gives you a button to import again — Import all my sleep history the first time, Import new nights after that. Then work down this list:

1. Check the sleep is actually there. Somnus reads your phone's health store; it does not talk to your watch or ring directly. Open Apple Health or Health Connect and look for the nights yourself. If they are missing there, the problem is between your wearable's own app and the health store, and that app's settings are where to fix it.
2. Check Somnus is allowed to read sleep. On iPhone: Settings → Health → Data Access & Devices → Somnus. On Android: Health Connect → App permissions → Somnus. Sleep permission is the one that matters; the vitals are a bonus and the app works without them.
3. On Android, older nights need a second permission. Health Connect keeps anything older than 30 days behind its own separate grant. Without it an import stops at 30 days even when you asked for everything. Press import again and allow the history prompt when Health Connect shows it.
4. Try again, and read what it says. The app reports what it found and how far back it looked, so "there was nothing there" and "I was only allowed to look at the last 30 days" are told apart rather than both showing as nothing.
5. Still wrong? Email us with your phone model, your wearable and roughly which nights are missing.

A first import on a phone with years of history takes a while. It works backwards from last night, so recent nights appear within seconds and the older years fill in behind them.

I do not have a watch or a ring. Can I still use Somnus?

Yes. Log your nights by hand — that is a complete way to use the app, and the diary, the sleep window and the eight-week plan all work from hand-logged nights. The parts that need measured data, such as heart-rate variability, respiratory rate and the sleep-stage breakdown, will stay empty, because nothing on your phone recorded them.

Is any of this medical advice?

No. Somnus is a consumer wellness product. It is not a medical device, it does not diagnose or treat anything, and nothing in it — including anything the AI coach says — is medical advice or a substitute for care from a qualified professional. The sleep window is a self-management suggestion calculated from your own logged nights, not a prescription.

Narrowing time in bed can make you sleepier during the day. Do not drive when drowsy, and talk to a health professional before following a shortened window. If you tell Somnus that you have sleep apnoea, narcolepsy, bipolar disorder or seizures, or that you work shifts, it will not shorten your window at all and will tell you why — that part of the plan needs someone who knows your health history.

What happens when my free trial ends?

If you have not subscribed, you keep the sleep diary — logging nights, the score each night produces, and the last seven nights as a trend — plus a handful of stories and soundscapes marked free in the library. These need a subscription: the AI coach in writing and in voice, the eight-week plan and the sleep window it sets, the rest of the audio library, and the longer-term patterns and analysis. Access to the paid features stops the moment the trial ends, so if you want to keep them, subscribe before then.

If you do not cancel, the trial converts into a paid subscription automatically — that is how store trials work. The app shows the trial length and the price before you confirm anything.

I paid, but the app says I am locked out.

Open the subscription screen and tap Restore purchases. That asks the store what you own and re-applies it, which fixes the usual causes: a new phone, a reinstall, or being signed into a different store account than the one that bought the plan. Make sure you are signed into the same App Store or Google Play account that made the purchase. If it still does not come back, email us.

How do I use the voice coach?

Open the coach and start a spoken session instead of typing. It runs full-screen, because a voice session is a mode rather than a screen you dip into. Speak normally — you do not need to hold a button, and you can interrupt the coach mid-sentence.

Things to know:

• Your microphone is open only while the session is open. Leaving the screen, or sending the app to the background, ends the session and closes the microphone.
• Your voice goes to a third party. The audio is streamed to ElevenLabs, a speech company, which turns your voice into words and speaks the reply back. It leaves your phone and our systems. What the coach actually says is still decided on our own servers, with the same safety screening as a typed message.
• The transcript is saved to the same conversation history as your typed messages. The audio itself is not stored by us and is not written to your phone.
• Prefer that nothing goes to a speech company? Type to the coach. It is the same coach, with the same history.
• The voice coach, like the written coach, needs a subscription or an active trial.
• Use headphones in a quiet room if the coach keeps hearing itself.

The Story voice setting under Profile is a different thing — it chooses who narrates the stories and the lessons, not the coach you talk to.

How do I get a copy of my data?

Profile → Export your data. Choose what to include — sleep logs, check-ins, thought records, medications, coaching progress, profile — and the app builds a plain JSON file you can save or send anywhere. It takes a few seconds. Once you have shared that file it is outside our control, so be deliberate about where it goes.

Something in the app is broken.

When Somnus stops working it sends us a report saying what broke and where in the code. The report does not identify you: there is no account id, no email address and no device id in it, and nothing you have written is included. Reports go to our own servers — we do not use a crash-reporting company — and are deleted after 30 days. Please also email us, because a crash report tells us what failed and not what you were trying to do.

Who can see my data?

The short version: your account, your health information and your conversation history are stored on Amazon Web Services in the United States (Oregon, us-west-2). There is no third-party analytics or advertising code in the app, by deliberate decision, and we do not sell your data. Spoken sessions are the one thing that leaves our systems, as described above. The full account is in the privacy policy.

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