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Choose the sound app that fits the job

Compare sound mixing with narrated bedtime stories, meditation, and adaptive audio. Find the features you would actually use.

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.

  1. Direct comparison

    Noisli vs Slo: Focus Sound Mixer in Your Browser

    Slo plays 180 focus sounds free in a browser and ships 189 in its iPhone, Android and Mac apps, 89 of them free. Here is how it compares with Noisli.

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  2. Direct comparison

    Noizio vs Slo: Browser Sound Mixer, No Download

    Slo mixes 180 free sounds in a browser and ships 189 in its iPhone, Android and Mac apps, 89 of them free. Here is how it compares with Noizio's 40+.

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  3. Direct comparison

    Slo vs BetterSleep (2026): Mixer or Full Sleep App?

    Slo has 189 sounds, 89 of them free, a mixer with a volume per layer and a timer up to 24 hours. BetterSleep adds 500+ sounds, SleepTales, hypnosis and sleep tracking.

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  4. Direct comparison

    Slo vs Brain.fm: Which Focus Sound App Fits You? (2026)

    Slo gives you 189 ambient sounds, 89 free, and a volume per layer. Brain.fm gives you task-based functional music with an ADHD setting. Compared for focus in 2026.

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  5. Direct comparison

    Slo vs Calm (2026): Sound Mixer or Wellness Library?

    Slo has 189 sounds, 89 of them free, a volume per layer and a timer up to 24 hours. Calm has 300+ Sleep Stories and guided meditation. A source-checked comparison for 2026.

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  6. Direct comparison

    Slo vs Dark Noise: Which Ambient Sound App Fits? (2026)

    Slo has 189 sounds, 89 free, Android and Mac apps and 180 free browser sounds. Dark Noise has 50+ sounds, Siri Shortcuts, widgets and Apple Intelligence Magic Mixes.

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  7. Direct comparison

    Slo vs Endel (2026): Manual Mixer or Adaptive Audio?

    Slo has 189 recorded sounds, 89 free, a volume per layer and a timer up to 24 hours. Endel builds adaptive Focus, Relax and Sleep soundscapes from context signals.

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  8. Direct comparison

    Slo vs Headspace (2026): Sound Mixer or Guided App?

    Slo has 189 sounds, 89 of them free, a volume per layer and a timer up to 24 hours. Headspace has Sleepcasts, guided meditation and six noise colors. Compared for 2026.

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  9. Direct comparison

    Slo vs myNoise: Which Sound Generator Fits You? (2026)

    Compare Slo and myNoise in 2026: Slo's 189 sounds, 89 of them free, and unlimited layer mixing against myNoise's 300+ evolving soundscapes and per-frequency calibration.

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  10. Direct comparison

    Slo vs Portal: Ambient Mixing or Immersive Nature? (2026)

    Compare Slo and Portal in 2026: Slo's 189 sounds, 89 free, and unlimited layer mixing against Portal's 80+ Premium portals, spatial audio and motion visuals.

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  11. Direct comparison

    Slo vs Rain Rain: Which Sleep Sound App Fits? (2026)

    Compare Slo and Rain Rain in 2026: Slo's 189 sounds with 89 free and 11 rain tracks against Rain Rain's 50 free phone sounds, Soften, Oscillator and mix caps.

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Replace one part

Alternatives

Start with the feature you used, then compare products that cover that specific job.

  1. App roundup

    Calm alternatives in 2026: pick one by what you used Calm for

    Calm does three jobs and most people pay for all three while using one. Here is what replaces each part, including the free options, checked against live listings on 2 August 2026.

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  2. App roundup

    Endel alternatives in 2026: what to use when the renewal lands

    Six things people move to when an Endel subscription comes up, including the free ones, and the one feature none of them reproduce. Checked against live listings on 2 August 2026.

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  3. App roundup

    Best myNoise Alternatives in 2026: 5 Compared

    Five myNoise alternatives compared on free tier, mixer control and platforms, with every fact checked against the live sites on September 4, 2026.

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  4. App roundup

    Best Noisli Alternatives in 2026: 6 Apps Compared

    Compare six Noisli alternatives for ambient mixing, focus music and Apple controls, with verified platforms, free limits and current features.

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Several options at once

App roundups

Compare several apps for sleep, focus, or sound mixing.

  1. App roundup

    Best Ambient Sound Mixing Apps in 2026: 6 Compared

    Six ambient sound mixing apps compared on layer controls, library size, free sounds, timers and platforms. Slo, White Noise by TMSOFT, BetterSleep, Noisli, Dark Noise and Noizio.

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  2. App roundup

    Best Brown Noise Apps 2026: Free and Paid, iPhone & Android

    Five brown noise apps compared on free sounds, price model, mixing, timers, fade-out, offline playback and platforms. Slo, White Noise by TMSOFT, Calm, Dark Noise and Apple Background Sounds.

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  3. App roundup

    Best Focus Sound Apps in 2026: 5 Workflows Compared

    Five focus sound apps compared on free sounds, price model, mixing, timers and platforms. Slo, Noisli, Brain.fm, Endel and Dark Noise.

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  4. App roundup

    Best Free Sleep Apps 2026: 6 Free Tiers Compared

    Six free sleep apps compared on what the free tier includes: sounds, meditations, mixing, timers, offline playback, ads and platforms, plus Slo's 89 free app sounds and 180 free browser sounds.

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  5. App roundup

    Best Free White Noise Apps 2026: 5 Sound Machine Apps Compared

    What each free white noise app gives you without paying: ads, daily limits, offline playback, mixing and timers on iPhone and Android, plus Slo's 89 free app sounds and 180 free browser sounds.

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  6. App roundup

    Best Nature Sound Apps 2026: 6 for Sleep, Free and Paid

    Six nature sound apps compared on recordings, free tier, layer control, timers, offline playback, platforms and cost. Slo, Rain Rain, myNoise, Portal, Calm and Apple Background Sounds.

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  7. App roundup

    Best Sleep Apps in 2026: 5 Honest Picks

    Five sleep apps compared on free sounds, price model, mixing, timers, fade-out, offline playback and platforms. Slo, Calm, BetterSleep, Pzizz and Apple Background Sounds.

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  8. App roundup

    Best Sleep Sound Apps 2026: 7 Sleep Noise Apps Compared

    Seven sleep sound apps compared on free sounds, price model, mixing, timers, fade-out, offline playback and platforms. Slo, TMSOFT, BetterSleep, Calm, Endel, Pzizz and Apple Background Sounds.

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  9. App roundup

    Best tinnitus masking apps in 2026: what to look for

    Four sound apps people use for tinnitus masking, judged on volume control, timers, mixing and spectrum shaping. No app treats tinnitus, and this guide does not pretend one does.

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  10. App roundup

    Best White Noise Apps 2026: 6 Compared for Sleep & Focus

    Six white noise apps compared on free sounds, price model, mixing, timers, fade-out, offline playback and platforms. Slo, White Noise by TMSOFT, BetterSleep, Noisli, Dark Noise and Apple Background Sounds.

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One app in detail

Published reviews

  1. Review

    Calm review (2026): worth it for two of its three parts

    A Calm review built from the live App Store and Google Play listings on 10 September 2026, Calm's own published prices, and Wirecutter's verdict. What it costs, what the ratings disagree about, and which part earns the renewal.

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  2. Review

    Endel review (2026): the adaptation is real, the price is a moving target

    An Endel review from the live App Store and Google Play listings on 10 September 2026: eight different prices on one listing, no pricing page at all, a rating gap between platforms, and which of the modes actually earns the money.

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