Lunara Support

Frequently Asked Questions

My recording stopped during the night. What happened?

Make sure your iPhone has enough storage (at least 200 MB free) and that "Background App Refresh" is enabled in Settings → General. Lunara also saves a checkpoint every minute, so you'll usually recover the session the next time you open the app.

The smart alarm didn't wake me up.

Check that Lunara has notification permission (Settings → Lunara → Notifications) and, if you use Sleep Focus or Do Not Disturb, allow Lunara as a time-sensitive app. We're working on a Critical Alerts entitlement with Apple so the alarm bypasses all Focus modes.

How do I cancel my subscription?

Open the iOS Settings app → tap your name at the top → Subscriptions → Lunara → Cancel.

Where is my sleep audio stored?

All audio stays on your iPhone in the app's Documents folder. We never upload it to a server.

How accurate is snore detection?

Lunara uses Apple's on-device audio classifier (the same ML model Apple's own apps use). It distinguishes snoring from speech, coughing, traffic, and music with high accuracy.

Why did my first 1–2 snores not get counted?

This is intentional and medically correct. When your iPhone locks, iOS suspends Apple's audio classifier to save battery. Lunara then falls back to a secondary detector that requires a pattern of 3 snore-shaped bursts within 15 seconds before it starts counting. This prevents Lunara from logging coughs, throat clears, or random noises as snores — a tradeoff used by clinical polysomnography too. You lose 1–2 snores at the very start, you gain zero false positives across the whole night. After the pattern is established, every subsequent snore is counted normally.

Can I sync between iPhone and iPad?

Cloud sync is coming with our backend integration. For now, data lives on each device.

Does Lunara work in the background?

Yes. Lunara keeps recording even when your iPhone screen is off, you receive a call (auto-pause/resume), or you use other apps. We also save a checkpoint every minute so you never lose a night.

What does the AI Coach do?

The AI Coach analyzes your sleep history, journal entries, and sleep profile to give personalized, science-backed advice. It uses Claude AI from Anthropic for natural-language insights. Audio is never sent — only anonymized summaries.

Will battery drain a lot overnight?

Lunara is optimized for overnight use. With airplane mode + screen off, typical battery drain is 5-10% over 8 hours. Keep your phone charging if possible.