EverLull synthesizes rain, ocean and deep noise live on your device — so it loops forever with no seam, no file, and no data. Build your own night, set a timer, and drift.
Layer any sounds, set each level, and let the sky respond. Nothing is a recording — it's generated the moment you press play.
Most sleep apps play a short recording on repeat — and after a while your brain hears the loop. EverLull generates sound continuously from filtered noise, oscillators and modulated filters, so it genuinely never repeats.
The audio is computed sample by sample. Run it for eight hours and no two seconds are ever identical.
No streaming, no downloads. It works on a plane, in a tent, or on airplane mode — using almost no data or battery.
Every sound is original. We license the same seamless loops to creators and apps with zero copyright risk.
A 2025 narrative review of randomized controlled trials and meta-analyses identified exactly which musical elements help people sleep. EverLull is engineered to that specification.
Across trials, listening to music consistently reduced sleep-onset latency — the time it takes to drift off.
Studies found improved sleep efficiency: more of the night actually spent asleep.
Total sleep time increased with regular pre-bed listening.
Music at 60–80 BPM with smooth melodies and simple structure — often classical or new age. Every EverLull piece is instrumental and paced at 52–72 BPM, at or below a resting heart rate.
At a comfortable volume. That's why the sleep timer has a 45m setting and Drift eases the mix down instead of stopping abruptly.
Binaural beats and brain-wave music show promise in trials and are still being validated — EverLull offers Delta through Alpha as optional layers, never as medical claims.
Source: Music as an adjunct for sleep health — narrative review of RCTs & meta-analyses (PubMed). EverLull supports rest and relaxation; it is not a treatment for insomnia or any medical condition.
Use EverLull free forever, or unlock the full studio of premium sounds, unlimited saved mixes and lossless synthesis with Plus.
“The rain actually sounds like rain the whole night — not a five-second clip on a loop. First app my brain stopped noticing.”
“Brown noise + fan is my focus button now. Zero data on a flight, still going after four hours.”
“Upgraded to Plus for the storm and deep-drone sounds and never looked back — unlimited saved mixes means every mood has its own preset.”
Every sound is synthesized live in your browser with the Web Audio API instead of playing a recorded file on repeat. There's no file and no loop point, so the audio runs all night without ever seaming or repeating.
Brown noise emphasises low frequencies — a deep, steady rumble that masks sudden sounds, which many people find best for staying asleep. Rain adds gentle high-frequency variation that can help you fall asleep faster. EverLull lets you mix both and dial in the balance.
Yes. Because the audio is generated on your device rather than streamed, EverLull keeps playing with no internet connection and uses almost no data, storage or battery.
EverLull is free with seven core sounds, the mixer and the sleep timer. EverLull Plus is $4.99/month or $29.99/year — unlocking premium sounds, unlimited saved mixes and higher-quality synthesis, with a 7-day free trial.
Yes. EverLull licenses full-length seamless loops for creators, apps and meditation platforms. Every sound is original and owned by EverLull, so there are no third-party copyright claims.
Yes. The compositions — Satie, Bach, Beethoven, Pachelbel — have been in the public domain for over a century, and EverLull doesn't play anyone's recording of them: a synthesized felt piano performs the pieces live on your device, with subtle timing and touch variation so no two renditions are identical. There is no recording, so there is nothing to license.
Yes. A 2025 narrative review of randomized controlled trials and meta-analyses found that pre-bed music listening reduced sleep-onset latency, improved sleep efficiency and increased total sleep time. The most effective music was slow (60–80 BPM), soft, simple and instrumental — often classical or new age — listened to for 30–45 minutes at a comfortable volume. EverLull is built to that specification, with a 45-minute fade timer and tempos of 52–72 BPM. EverLull supports rest; it isn't a medical treatment.
Used sensibly, yes — womb-familiar sound helps many newborns settle. Follow the common-sense guidance pediatric groups give for any sound machine: keep the volume gentle (quieter than a soft shower), place the speaker well away from the crib — across the room, never inside it — and use the sleep timer rather than running sound at volume all night. EverLull's Baby mode presets start at deliberately low levels. For medical questions about your child's sleep, ask your pediatrician.
Yes — that's what the creator license is for. Every sound is synthesized from scratch and owned by EverLull, so licensed loops are safe from Content ID claims and takedowns. A loop pack is a one-time purchase with a perpetual royalty-free license for your productions, including monetized ones. You can't resell the audio itself as audio — see the Terms for details.
Free to start, no account, and it's already playing the moment you press the button.
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