Best Apps

By Filip Kowalski · Updated September 13, 2026

Best Sleep Sound Apps 2026: 7 Sleep Noise Apps Compared

Disclosure: Slo is made by the team behind this guide. We checked free access, pricing model, platforms, offline playback, mixing and timers on official pages and US store listings on September 13, 2026; other feature details come from our July 31, 2026 check, and Pzizz’s session details from its App Store listing on September 10, 2026. We did not conduct hands-on testing. No app in this list can guarantee better sleep.

Slo is a sleep sounds app for iPhone, Android and Mac with free browser players and a mixer at slonoise.com; the bedtime case it handles best is a quiet layered mix, rain over brown noise for example, with a timer so the sound stops on its own. Choose White Noise by TMSOFT for a traditional noise machine with alarms and recording; BetterSleep for a large mixer plus tracking and stories; Calm for polished guided content; Endel for adaptive generated audio; Pzizz for narrated sleep and nap sessions; or Apple Background Sounds for basic playback without another app.

Quick comparison

Pick	Best for	Free access	Paid model	Platforms	Offline	Mixing	Timer
Slo	Manual ambient layers	Browser players and mixer	App: check the current store	iPhone, Android, Mac; browser	Not claimed	Yes, a volume per layer	Yes, in the browser players
White Noise by TMSOFT	Noise-machine features	Lite edition, with ads	One-time Full and Pro	iPhone, iPad, Android, Mac, Windows	Yes, sounds play from the device	Mix Pad	Yes, with fade
BetterSleep	Broad sleep toolkit	Free trial, then very limited	Subscription or lifetime	iPhone, iPad, Android	Sounds yes; guided content once downloaded	Yes, sounds, music and brainwaves	Yes
Calm	Guided bedtime content	Selected meditations, Scenes and a Sleep Story	Premium subscription	iPhone, iPad, Android, web	Most sessions can be downloaded	No layer mixer	Not verified
Endel	Adaptive sound	Free Edition, sessions up to 10 minutes	Subscription or lifetime	iPhone, iPad, Mac, Android, Windows, web	Yes, per its App Store listing	Not stated; the audio is generated	Shutoff timer
Pzizz	Narrated sessions	Classic Pzizz	Pro subscription and other in-app purchases	iPhone, iPad, Android; Mac runs the iPad app	Yes, per pzizz.com	Voice and music volumes set apart	Yes, up to 24 hours, with fade-out
Apple Background Sounds	Built-in basic playback	Included	None	iPhone, iPad, Mac, Apple Vision Pro	Not stated by Apple	No	Yes, from iOS 26 and macOS Tahoe

How we picked

We read each company’s product pages, help center and US App Store or Google Play listing, first on July 31, 2026 and again for access, pricing model, platforms, offline playback, mixing and timers on September 13, 2026. We weighed sound control, bedtime tools such as timers, platform coverage and how clearly each company documents its product. We did not install and test the apps, and we did not treat star ratings or a company’s sleep claims as proof of an outcome. For no-cost options only, see the best free sleep apps.

1. Slo: best for direct sound mixing

Slo’s curated library covers noise colors, nature audio and atmospheric textures. Each mixer layer has its own volume, and curated presets offer a quick starting point. Browser players add volume and timer controls; app download routes cover iOS, Android and Mac.

Best for: People who want a small, repeatable soundscape rather than stories or sleep tracking.

2. White Noise by TMSOFT: best noise-machine replacement

TMSOFT documents local playback of 50 stock sounds, a Mix Pad, fade timers, alarms, recording, playlists and community Market downloads. Lite is free and ad-supported, while Full and Pro are one-time purchases with different tools.

Best for: People who want alarms, their own recorded loops or broad device support.

3. BetterSleep: best all-in-one sleep toolkit

BetterSleep’s current support pages describe more than 500 sounds and melodies, over 100 SleepTales, meditations, a timer, bedtime reminders, tracking and a sleep recorder. The mixer supports multiple sounds plus music and a brainwave track.

Best for: Someone who wants sleep content and tracking around an ambient mixer.

Consider: BetterSleep says it moved to a subscription model in 2025. New users get a free trial, and after it ends only a very limited selection of content stays open. If you only need one noise sound, much of what you pay for goes unused.

4. Calm: best guided sleep library

Calm provides soundscapes, music, meditations and Sleep Stories across iOS, Android and web. Its help center documents 300+ Premium Sleep Stories and a smaller selection of free Stories and background Scenes.

Best for: People who value narration and guided content more than detailed sound mixing.

Consider: Exact pricing varies by region and channel, so check the current offer rather than an old annual figure.

5. Endel: best low-decision adaptive audio

Endel generates audio in real time and can adapt to inputs such as time, weather, light, motion or heart rate, depending on the device and permissions. Its official site lists a Sleep mode and apps for iOS, Android, Mac, Windows and the web. Its App Store listing says all soundscapes are available offline and describes a shutoff timer.

Best for: People who prefer an evolving soundscape without balancing layers.

Consider: Endel’s help center describes free sessions of up to 10 minutes; longer listening needs a subscription or a lifetime purchase. If audible changes wake or distract you, choose a stable loop or noise generator.

6. Pzizz: best for narrated sessions

Pzizz plays timed sleep, nap and focus sessions. Its App Store listing describes the audio as a mix of music, voiceovers and sound effects, with several narrators and a choice of narration styles. Sleep length and wake-up time are adjustable, and pzizz.com lists sessions of up to 24 hours with separate fade-outs for music and voice. The App Store app is built for iPhone and iPad and runs on Mac as an iPad app; pzizz.com also links an Android app. The free option is Classic Pzizz, alongside a Pro subscription.

Best for: People who want a voice to lead them through a fixed-length session rather than a background loop they set themselves.

Consider: The voice is the point of the product. If speech keeps you awake, a wordless mixer suits you better.

7. Apple Background Sounds: best built-in option

Apple’s Background Sounds feature plays ambient soundscapes on iPhone, iPad, Mac and Apple Vision Pro. Apple documents volume and equalizer controls, and a stop timer from iOS 26 and macOS Tahoe.

Best for: A basic steady sound with no extra account.

Consider: It is not a full sleep library or multi-layer mixer.

Sleep presets

Compare two low-complexity mixes

Use the timer, keep playback comfortable and remove any layer that makes you listen actively.

Rain and Brown Noise for Deep Sleep

A low, steady foundation softened by the natural detail of rainfall.

Brown Noise 65%
Rain 38%

Play this mix View details

How to evaluate a sleep sound app

Match the problem: A steady sound can mask intermittent room noise. It cannot fix every cause of poor sleep.
Keep controls simple: You should be able to start a saved sound in a few taps with the screen dim.
Check timer and offline behavior: Test both before travel or bedtime.
Watch the volume: Use only enough level to soften the distraction. If you need to raise it sharply, change the placement or sound instead.

Read how to create a sleep soundscape for a step-by-step setup.

Frequently asked questions

What is the best app for sleep sounds?

Slo fits manual ambient mixing; TMSOFT fits a traditional noise machine; BetterSleep and Calm fit wider sleep-content needs; Endel fits adaptive audio; Pzizz fits narrated sleep and nap sessions; Apple Background Sounds fits basic built-in playback.

Are sleep sound apps safe to use all night?

Keep playback at a comfortable level and use a timer if sound is only needed while settling down. Device placement matters too: avoid putting a loud speaker close to your head. Ask a qualified clinician about persistent sleep or hearing concerns.

Which noise color is best for sleep?

There is no universal winner. White noise sounds brighter, pink noise is softer, and brown noise emphasizes lower frequencies. Compare the noise colors at similar levels.

Sources checked July 31 and September 13, 2026

TMSOFT White Noise
BetterSleep current offering, getting-started guide, is BetterSleep free? and offline mode (September 13)
Calm sleep content, free content, available apps and using Calm offline
Endel product overview, technology/platform details, Endel on the App Store and using Endel for free (September 13)
Pzizz App Store listing (modules, narrators and session controls, September 10) and pzizz.com (offline use, timers and apps, September 13)
Apple Background Sounds
Slo product-facts ledger and website player/mixer source reviewed July 31, 2026

Explore more sounds in Slo

Stack two or three sounds, keep the blend, and let the timer stop it. Slo, on iOS, Android and Mac.

Filip Kowalski is the developer of Slo and writes about sound, sleep, and focus.