Compare
Choose the sound app that fits the job
Some of these apps hand you sounds to mix yourself, and others read you a bedtime story, guide a meditation, or build audio as you go. These pages work out which one matches how you actually want to fall asleep.
Slo and another app
Direct comparisons
See where a manual ambient mixer fits and where another app offers a different kind of library or workflow.
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Direct comparison
Noisli vs Slo: Focus Sound Mixer in Your Browser
Slo or Noisli? Noisli puts sound inside a focus workspace with an editor and a timer. Slo plays 180 sounds free in a browser and has an Android app.
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Direct comparison
Noizio vs Slo: Browser Sound Mixer, No Download
Slo or Noizio? Noizio is a compact 40+ sound app you unlock once. Slo mixes 180 sounds in a browser with nothing to install. Who each one suits.
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Direct comparison
Slo vs BetterSleep (2026): Mixer or Full Sleep App?
Choosing between BetterSleep and Slo? One is an all-in-one sleep app with stories and tracking, the other is a sound mixer you set yourself.
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Direct comparison
Slo vs Brain.fm: Which Focus Sound App Fits You? (2026)
Wondering whether Brain.fm is worth paying for? It plays task-based music, while Slo plays ambient sound you mix yourself. Here's who each one suits.
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Direct comparison
Slo vs Calm (2026): Sound Mixer or Wellness Library?
Deciding whether to keep paying for Calm? Its 300+ Sleep Stories and meditation are the reason to stay. Slo is the mixer if you only used the sounds.
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Direct comparison
Slo vs Dark Noise: Which Ambient Sound App Fits? (2026)
Picking between Dark Noise and Slo? Dark Noise goes deep on Apple with Shortcuts and widgets, while Slo covers Android and 180 free browser sounds.
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Direct comparison
Slo vs Endel (2026): Manual Mixer or Adaptive Audio?
Endel changes the sound for you; Slo keeps the mix you set. Work out which one fits how you actually listen at your desk and at night.
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Direct comparison
Slo vs Headspace (2026): Sound Mixer or Guided App?
Soundscapes or guided meditation? Headspace narrates Sleepcasts and leads the session; Slo plays ambient sound you mix and time yourself.
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Direct comparison
Slo vs myNoise: Which Sound Generator Fits You? (2026)
Slo or myNoise? myNoise lets you tune a sound band by band. Slo gives you 180 free browser sounds and a two-control mixer. Here's who each one suits.
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Direct comparison
Slo vs Portal: Ambient Mixing or Immersive Nature? (2026)
Slo or Portal? Portal is an Apple-only window onto a real place, with visuals and spatial audio. Slo is background sound you mix, Android included.
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Direct comparison
Slo vs Rain Rain: Which Sleep Sound App Fits? (2026)
Is the Rain Rain app free? Fifty of its sounds are, on a phone. Slo plays 180 free in a browser. Here's which sleep sound app fits how you listen.
Replace one part
Alternatives
Start with the feature you used, then compare products that cover that specific job.
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App roundup
Calm alternatives in 2026: pick one by what you used Calm for
Leaving Calm? Work out which of its three parts you actually opened, then replace that one. Free options included, listings checked 2 August 2026.
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App roundup
Endel alternatives in 2026: six options, including the free ones
Pricing your way out of an Endel subscription? Six alternatives, which of them cost nothing, and the one thing none of them do. Listings read 2 August 2026.
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App roundup
Best myNoise Alternatives in 2026: 5 Compared
Generator marked for patrons, or a donation that did not cover the app? Five myNoise alternatives compared on free tier, mixing and platforms.
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App roundup
Best Noisli Alternatives in 2026: 6 Apps Compared
Hit the free plan's daily limit, or want sounds Noisli does not have? Six Noisli alternatives compared on sounds, platforms, timers and free limits.
Several options at once
App roundups
Compare several apps for sleep, focus, or sound mixing.
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App roundup
6 Best Free White Noise Apps for iPhone & Android (2026)
Compare six free white noise options for iPhone, Android and web. See what works offline, which have ads, and what stays free without a subscription.
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App roundup
Best Ambient Sound Mixing Apps in 2026: 6 Compared
One recording rarely covers a whole room. Six ambient sound mixer apps compared on layer control, library size, free sounds, timers and platforms.
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App roundup
Best Brown Noise Apps 2026: Free and Paid, iPhone & Android
Which brown noise app to pick: what each one costs, how many brown recordings you get, which run on Android, and how the timers fade. Five apps compared.
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App roundup
Best Focus Sound Apps in 2026: 5 Workflows Compared
Need one sound to work behind you all day? Five focus and concentration apps compared on free sounds, price, mixing, timers and platforms.
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App roundup
Best Free Sleep Apps 2026: 7 Free Tiers Compared
What you actually get without paying from seven free sleep apps on iPhone and Android, where each paywall starts, and which free tiers last all night.
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App roundup
Best Nature Sound Apps 2026: 6 for Sleep, Free and Paid
Want rain or a river running all night without paying? Six nature sound apps compared on free sounds, control, timers, offline playback and platforms.
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App roundup
Best Sleep Apps in 2026: 5 Honest Picks
Sleep apps split into sounds, stories, narrated sessions and trackers. Which kind fits your night, what five of them cost, and what each one leaves out.
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App roundup
Best Sleep Sound Apps 2026: 7 Sleep Noise Apps Compared
Seven sleep sound apps compared on how many sounds they hold, whether you can layer them, how the timer fades out, and what keeps playing without Wi-Fi.
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App roundup
Best tinnitus masking apps in 2026: what to look for
Four sound apps people with tinnitus use to make the ringing less noticeable at night, compared on volume, timers and price. None of them treats tinnitus.
One app in detail
Published reviews
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Review
Calm review (2026): worth it for two of its three parts
Is Calm worth the money? What it costs, who it suits, and which of its three parts earns the renewal, from the live store listings on 10 September 2026.
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Review
Endel review (2026): what it costs and which mode is worth it
Endel publishes no price, and its App Store listing showed eight of them on 10 September 2026. What you might pay, and which of the modes earns the money.
