Noisli

Noisli is an ambient sound mixer from 2013 that has never pretended to be anything else: you raise and lower levels for rain, cafe chatter, fire, waves and the rest of the palette, save the blend, and let it run. Around that mixer sits a small productivity suite — a focus timer, curated playlists, listening sessions and a distraction-free text editor — and the whole thing ships on web, Chrome, iOS and Android. The gate is deliberately narrow: the free tier gives 16 sounds, 1.5 hours of streaming per day, three curated playlists and a simple timer, while Pro at $10 per month billed yearly lifts you to 28 sounds, unlimited streaming, ten playlists, an advanced timer and mix behaviours like oscillation and shuffle. Business sits at $24 per month for two seats with team management and centralised billing.

What you are not buying is adaptation. Noisli does not read the weather, your heart rate or the time of day to retune the bed the way Endel or Brain.fm pitch theirs; you set the sliders and they stay set, which is exactly the point if you already know what you want to hear. The palette is also small in absolute terms — 28 sources at the top personal tier — so anyone wanting a deep sound-design bench should look at myNoise instead. Before subscribing, check what actually binds you: the 1.5-hour daily cap on the free tier, the annual billing behind the headline Pro price, and the per-two-seat unit of the Business plan.