AllApps

Sleep sound apps you buy once.

Buy White Noise. It is a dollar, it has been doing this job for fifteen years, and it does everything most people need from a noise machine. Sleep Machine is the pick if you want to layer your own mix. Sleep Sounds uses real field recordings and is the one reviewers say treats the battery best. Sleep Sounds HQ has by far the largest library and by far the largest price, and the reviews do not show it sleeping anyone better.

The filter. Every app here is a single purchase. None of them can start charging you monthly for what you already bought. See every app under this rule ›
Top pick

White Noise

TMSOFT
View on the App Store ›
$0.99 once4.8★ (46,254)Updated Oct 23, 2026
Verdict
White Noise has a loyal long-term following for its simple sound library and timer options, but a recurring thread of crash reports over the years suggests reliability hasn't been fully nailed down.
Best for
Someone who wants a straightforward sleep-sound app with timers and multiple options, and who's tolerant of occasionally reinstalling it if it acts up.
The catch
Some users report the app crashing or stopping playback mid-session, an issue that reviewers say has persisted for years despite reinstalls.
One-time purchaseSleep timerMixes sounds

Sleep Machine

SleepSoft LLC
View on the App Store ›
$3.99 once4.7★ (3,000)Updated Feb 14, 2021
Verdict
A no-frills white noise app with a wide sound library and simple controls, praised for smooth looping and easy customization. A small number of reviewers report crashes or trouble opening it, which is worth noting given how few complaints exist overall.
Best for
Someone who wants to mix and layer ambient sounds for sleep without dealing with a subscription or a cluttered interface.
The catch
A handful of users report the app crashing or failing to open, so it's not flawless on stability.
One-time purchaseLayered mixesNo subscription

Sleep Sounds: relaxing sounds

Anna Koynova
View on the App Store ›
$2.99 once4.7★ (1,968)Updated Jan 26, 2021
Verdict
Reviewers praise the sound quality and simple interface, and a few note it's easy on battery life overnight. The review set is thin beyond that, so it's hard to say much about edge cases or long-term reliability.
Best for
Someone who wants a straightforward, no-frills sleep sounds app with a clean set of nature recordings and doesn't need alarm features.
The catch
At least one reviewer wanted to use these sounds as a morning alarm and couldn't, so this isn't built for that use case.
One-time purchaseField recordingsLight on battery

Sleep Sounds HQ: relaxing aid

Phase4 Mobile
View on the App Store ›
$59.99 once4.8★ (3,043)Updated Oct 7, 2026
Verdict
Reviewers like the sound quality and describe it as easy to navigate, with several calling it worth the money — though some of those value comments reference a far lower price than what it charges now, which undercuts the value claims for a buyer today.
Best for
Someone who wants a large, high-fidelity library of ambient recordings for relaxation on an iPhone or iPad, rather than a handful of generic white-noise loops.
The catch
Several of the reviews praising it as good value cite a price much lower than what it currently costs, so the value case reviewers make doesn't hold at today's price.
One-time purchase600+ recordingsFull stereo

Side by side.

AppPriceLibraryMix soundsMade forUpdated
White Noise$0.99 once Generated and recordedYesEveryday useOct 23, 2026
Sleep Machine$3.99 once RecordedYesBuilding a mixFeb 14, 2021
Sleep Sounds: relaxing sounds$2.99 once Field recordingsYesBattery lifeJan 26, 2021
Sleep Sounds HQ: relaxing aid$59.99 once 600+ recordingsYesNightly listenersOct 7, 2026

Who should skip this entirely.

A cheap fan does this, costs about the same, never updates itself into a broken version and does not sit on your charger all night. If you already sleep through the night, or you share a room with someone who does not want the noise, none of this helps. And if the reason you cannot sleep is stress or pain, a sound app is a way of not dealing with the actual problem.

Questions.

Will these keep playing all night?All of them can, but reviewers of two report heavy battery use overnight. Keep the phone on a charger, or use the timer rather than looping until morning.
Is a paid app better than the free ones?What you are buying is no ads, a longer library and offline playback. The sound itself is not meaningfully better.

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