Sounds + adaptive
A catalog tuned for the night you're having.
258 tracks across sleep, nature, frequencies, neurodivergent, and affirmations. An adaptive layer listens to your heart rate and reshapes the mix from sleep onset through REM.
Core free. No accounts. No third-party tracking.
Sleep, by science.
A research-backed sleep companion. 258 sounds, custom AI affirmations in a voice you choose, a smart alarm that aims to wake you in light sleep when wearable data is available.
258 soundsCustom AI affirmations5 voicesAdaptive layerSmart alarmApple WatchWhoop · Oura · PolarSleep trackingSaved mixesOfflineAccount-freeFree core
What Aviana does
Three tools, one product, working as a night.
Sounds tuned to the sleep stage you're in, on-demand affirmations spoken in the voice you pick, and an alarm that waits for the right moment to wake you. All free. No account.
Custom AI affirmations
Speak the worry. Hear it dissolved.
Type a prompt — "calm before tomorrow's interview", "let go of today" — and Aviana generates a 60–120 second affirmation in a voice you choose. First two affirmations free per device; your prompt is never stored.
Smart alarm
Wake gently, in light sleep.
Set your latest acceptable wake time. When wearable data is available, Aviana aims for a light-sleep moment in the window and tries to avoid waking you mid-deep or mid-REM.
258 sounds, five categories
How does Aviana help with sleep?
Every track is either a curated field recording or DSP-generated to a specific psycho-acoustic target. Many are informed by published research. Tap a tile to hear ten seconds.
87
Sleep
Pads, drones, singing bowls, heartbeat — onset to deep.
53
Nature
Rain, ocean, wind, forest — curated field recordings.
56
Frequencies
Pink noise phase-locked to slow waves, binaural beats, solfeggio.
32
Neurodivergent
Low-sensory, non-triggering soundscapes for ADHD, autism, misophonia.
30
Affirmations
30 curated + unlimited AI-generated — let go, accept, rest.
Custom AI affirmations
Speak the worry. Hear it dissolved.
Type a prompt — calm before a meeting, letting go of today, falling back asleep. Aviana generates a 60–120 second affirmation in a voice you choose. First two free per device. The prompt is held only in memory, never stored.
A prompt the size of a thought
- Type a worry or a wish — one or two sentences.
- Pick one of five sleep-tuned voices.
- Listen to a 60–120 s affirmation, generated in roughly fifteen seconds.
- Save it to your library. Layer it under any sound.
Your prompt is sent to the AI, hashed for a cache key, then dropped. The audio is kept. The text is not.
Tap to hear each voice
Voice selection respects research that lower-pitched, slowly-paced narration most effectively activates the parasympathetic relaxation response.
Adaptive layer
How does the adaptive layer work?
Heart rate falls. HRV widens. Sleep stages cycle. Aviana watches the stream and adjusts the density, spectral rolloff, and pulse-sync of the soundscape in real time — denser at onset, sparser through deep sleep, gentle landings near morning.
With a connected wearable — Apple Watch, Whoop, Oura, Polar, Coros, or Suunto — the adaptation follows your actual stream. Without one, the curve runs on the clock. Either way the catalog plays.
Smart alarm
When will Aviana wake you?
Set a latest acceptable wake time. When wearable data is available, Aviana aims for a light-sleep moment in your window and tries to avoid waking you mid-deep or mid-REM. Wearable stage detection isn't perfect, so this improves the odds — it doesn't guarantee them.
Bring your wearable
Which wearables does Aviana support?
Apple Watch directly. Whoop, Oura, Polar, Coros, Suunto via Terra. Apple Health and Android Health Connect cover anything else your device exposes.
Apple Watch
Whoop
Oura
Polar
Coros
Suunto
The adaptive layer becomes real-time when any of these are connected. Without one, the curve runs on the clock — and your selected sound still plays.
Privacy by design
No accounts. No ads. No third-party tracking.
Aviana is account-free and ad-free. Audio plays from your device, your prompts are never stored, and health data is opt-in. We do send our own anonymous usage events (no PII, 90-day retention) so we can fix what breaks — that's it.
- No accounts. No email, no password, no sign-in.
- No third-party trackers. No Google Analytics, no Meta, no Mixpanel, no SDKs phoning home.
- No prompt storage. Your affirmation prompt is hashed in memory, used, dropped.
- No raw health stream. Heart-rate and sleep stages are read locally and used to drive the adaptive layer; raw samples never leave the device unless you explicitly opt in to research telemetry.
- No microphone, camera, location. Aviana asks for none of these permissions.
- No ads, ever. Including post-launch. There is no ad slot anywhere in the app to retrofit.
- Minimal anonymous telemetry. Which screens loaded, which buttons tapped, what errors hit — keyed to an anonymous device UUID, kept 90 days, never sold.
Backed by 47+ peer-reviewed studies
Why should I trust the sound choices?
Every track in the catalog has a research card — a one-line summary of what evidence says it does, and a link to the underlying paper. Here are three the catalog leans on.
Papalambros 2017
Pink-noise bursts phase-locked to slow oscillations enhanced slow-wave activity and overnight memory consolidation in older adults.
Papalambros NA et al. Frontiers in Human Neuroscience 11:109. ↗Hall 2024
Systematic review (k=12 RCTs) of self-affirmation interventions reports consistent small-to-moderate improvements in subjective sleep quality.
Hall TA et al. Behavioural Sleep Medicine, 22(4). ↗Wen 2020
Computational model demonstrates how acoustic envelopes that match slow-oscillation rhythm enhance the K-complex–spindle cascade central to NREM-3.
Wen Y et al. Journal of Theoretical Biology 506:110428. ↗Frequently asked
Answers, in plain language.
Is Aviana free?
Core sleep sounds are free. The smart alarm, sleep tracking, saved mixes, offline mode, and bedtime reminders are free. The first two custom AI affirmations per device are free; further generations will eventually be part of a paid tier (timing not set). No ads. No third-party trackers in either the app or this marketing site. We do collect anonymous usage events on our own server (no PII, retained 90 days) so we can fix what breaks.
Does Aviana need an account?
No. Aviana does not require sign-up, email, or password. The app generates an anonymous device identifier the first time it runs and uses that to scope your saved mixes, settings, and affirmation history. Reinstalling the app generates a new identifier, so previously generated custom affirmations will not be visible after a reinstall today; we are adding cross-device persistence in a future update.
Does Aviana need my health data?
No. The adaptive sound layer and the smart alarm are better when they can read your heart rate, sleep stages, and HRV — but every health integration is opt-in. You can use Aviana as a pure sound + AI affirmations app without granting any health permissions, and the catalog plays exactly the same.
When will Aviana be on the App Store and Google Play?
Aviana is in pre-launch on both stores. While we finish review, the full app is available as a Progressive Web App at app.aviana.life — it works on iPhone, Android, iPad, Mac, and PC, supports offline mode, background audio, and Apple Health / Health Connect on supported browsers. Subscribe via the 'get notified' link below to be told the moment the App Store and Play Store builds are live.
Will my affirmation prompt be stored anywhere?
No. The prompt you type lives in memory only for the duration of the request. We use it to query the AI, hash it for a cache key (so re-asking the same prompt re-serves the same audio without re-billing), and then drop it. The generated audio file is kept on our CDN so you can replay it; the prompt that produced it is not.
Can I use Aviana without Wi-Fi?
Yes. Aviana has a built-in offline mode. From Settings → Offline access you can download the full sound catalog (about 500 MB total) or specific tracks. Once cached, audio plays without any network. Custom AI affirmations require network at generation time, but once generated they play offline too.
Does the adaptive layer work without a wearable?
Partially. Without a wearable, Aviana still varies texture across the night on a schedule — denser at sleep onset, sparser through what should be deep sleep, gentle landings near morning. With a connected wearable (Apple Watch, Whoop, Oura, Polar, Coros, Suunto) the adaptation is real-time: density follows your actual heart rate and detected stage rather than the clock.
Which wearables does Aviana support?
Apple Watch directly via WatchConnectivity. Whoop, Oura, Polar, Coros, Suunto via Terra, the wearable-API aggregator we route through. Apple Health and Android Health Connect cover any sleep-stage data the device's OS exposes — so if your wearable already writes to those sources, Aviana sees it without a separate integration.
Tonight
Sleep tonight. Bring your headphones.
Aviana works in any browser. No download, no account, no card. Open the app and start a sound.