Comparison

AOK Sleep vs ThunderSleep

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

AOK Sleep

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AOK Sleep is a simple, beautiful white noise and sleep sounds app. No account. No subscription. No bloat โ€” just the sounds you need to fall asleep, stay asleep, and block out the world. **A sound library built for real sleepers.** Choose from noise colors (white, brown, pink, grey, violet), nature, home, and ambient sounds, plus binaural wave tracks and heartbeat sounds โ€” 36 sounds and growing. Every sound loops seamlessly, so there's no jarring restart to pull you out of sleep. **Mix your perfect combination.** Layer up to three sounds together โ€” rain and thunder, fan and white noise, whatever gets you there โ€” with independent volume control for each. Save your favorite combos as Favorites and recall them with one tap. **Make it yours.** Light, Dark, or System theme, plus 12 accent colors โ€” because your sleep sounds app should look the way you want it to. **Set it and forget it.** Built-in sleep timer with any duration or endless playback, so the sound stops on its own or plays all night. **Your data stays on your device.** No account required. No data collection. No ads. AOK Sleep is completely private โ€” everything happens locally on your device. **One-time purchase, not a subscription.** Unlock the full 36-sound library, the mixer, and unlimited timer duration for a single one-time price. No recurring charges, ever. --- Download AOK Sleep and get the rest you actually need. ---

About

ThunderSleep

Features
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Real thunderstorms, rain, and ocean ambience โ€” recorded to loop seamlessly, so the sound never breaks and never wakes you. ThunderSleep does one thing properly: it plays a beautiful soundscape and gets out of the way. No account. No sign-up. Nothing sent anywhere. 18 SOUNDSCAPES Storms rolling across mountain peaks, rain over open fields, thunder off a beach shoreline, a midnight storm in full voice, and soft ambient tones for meditation โ€” across four categories: Thunder, Rain, Ocean, and Meditation. A SLEEP TIMER THAT FADES Choose anything from 15 minutes to All Night. When the time is up the sound fades out gently instead of cutting to silence, so it never jolts you awake. BUILT FOR THE DARK โ€ข Lock-screen playback controls with full artwork โ€ข A Live Activity on the Lock Screen and Dynamic Island โ€” play, pause, skip, and the timer countdown, without unlocking โ€ข Keeps playing in the background, and the timer keeps running even if you close the app โ€ข Bedtime and wake-up reminders โ€ข Favorites, so tonight's sound is one tap away โ€ข Last night's rest from Apple Health, right on the timer screen โ€ข A design made for a dark room: deep blacks, soft glass, and gentle motion COMPLETELY FREE All 18 soundscapes, every timer up to All Night, the gentle 2-minute fade-out and the thunder wake-up sound are free for everyone. ThunderSleep is supported by ads, with no purchases and no subscriptions. PRIVACY ThunderSleep runs entirely on your device. There is no account, no backend, and no sync. Sleep data read from Apple Health never leaves your iPhone. โ€” Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://racyinfotech.com/thundersleep/privacy.html

Screenshots

AOK Sleep4 screens
ThunderSleep4 screens

Verdict

The call

The clearest difference is ads: AOK Sleep at none against ThunderSleep's shown. AOK Sleep also leads on iOS requirement (15.0 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. AOK Sleep sells 1 one-off in-app purchase and ThunderSleep sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

AOK Sleep ships an update every 2 months, ThunderSleep every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

Scorecard2 real differences ยท 4 level
AOK Sleep versus ThunderSleep: the parameters behind the verdict, then further details
ParameterAOK SleepThunderSleep
PriceFreeFree
Update frequencyEvery 2 monthsEvery 5 weeks โ€” better
AdsNo โ€” betterYes
In-app purchasesYesYes
DevicesiPhone, iPad, iPod โ€” betteriPhone, iPad
Requires iOS15.0 โ€” better18.0
Further details โ€” not scored
Size334 MB62 MB
Age rating4+4+
DeveloperAOK Labs Limited Liability CompanyVandita Vasani

In-app purchases

1 purchases

AOK Sleep

One-time1
  • AOK Sleep Pro$2.99
4 purchases

ThunderSleep

Subscriptions2
  • Premium Monthly$2.991 Month
  • Premium Annual$19.991 Year
One-time2
  • Remove Ads$2.99
  • Premium Lifetime$29.99

Questions

Is AOK Sleep free?
AOK Sleep is free to download, with in-app purchases available.
Is ThunderSleep free?
ThunderSleep is free to download, with in-app purchases available.
Do AOK Sleep or ThunderSleep have ads?
ThunderSleep shows ads; AOK Sleep does not.
Which is updated more often, AOK Sleep or ThunderSleep?
AOK Sleep ships an update every 2 months, and ThunderSleep every 5 weeks. Most recently, AOK Sleep was updated on October 24, 2026 and ThunderSleep on October 25, 2026.

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