# SleepDrift: Sound Machine — Generate sounds you describe

> Generate sounds you describe (iPhone/iPad app by Karl Groethe.)

- Source: https://appshunter.io/ios/app/sleepdrift-sound-machine/id6800970080 (this page in markdown: same URL + `.md`)
- Developer: [Karl Groethe](https://appshunter.io/developer/6785324277)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 605 MB
- Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2026-08-24
- Data updated: 2026-08-28
- User reviews in markdown: https://appshunter.io/ios/app/sleepdrift-sound-machine/id6800970080/reviews.md

## What is SleepDrift?

Most sleep apps play you a recording. This one creates the sound from what you
type. In seconds.

Say what you want to hear — "rain on a canvas tent", or "a box fan in a big
empty room" — and SleepDrift builds it on your iPhone. What you describe is
never picked from a library.

Because the sound is generated rather than recorded, it doesn't loop. Recorded
tracks come back around every few minutes, and once you have heard the join you
can't unhear it. There is no join here.

WHAT YOU GET
• Any sound you can describe
• More than one thing at once: "a stream over rocks, birds in the trees" is
  made as two layers and mixed, so you can build the room you want
• Twelve ready-made classics — white, brown and pink noise, a box fan, rain on
  a roof, ocean waves, a mountain creek, a campfire, a night train and more
• One slider from warm to bright, instead of three separate noise files
• A dice, for the nights when you can't think of anything
• A sleep timer that fades out slowly, so nothing cuts off mid-breath
• Gentle wake: your morning sound rises from a whisper over two minutes, with a
  notification as a backup if the app isn't running by then
• Nightstand mode, an ultra-dim clock you can read at 3am, with backgrounds and
  an amber nightlight
• Favourites kept for good, with icons you pick

TYPE IN YOUR OWN LANGUAGE
The app is in English, German, Spanish, French, Italian, Portuguese, Japanese,
Korean and Chinese, and you can describe a sound in any of them. Your words are
translated on the phone before the sound is made — nothing is sent anywhere.
(Needs iOS 18 and Apple's language pack for your language.)

IT RUNS ON YOUR PHONE
No account and no servers. Nothing you type and nothing you make leaves the
device, and after the download it needs no internet at all, so it works in
airplane mode all night.

FOR NURSERIES
Guidance for infant sleep puts all-night sound under about 50 dB, with the
speaker across the room rather than beside the cot. SleepDrift won't pretend to
measure that; a phone can't do it reliably. The test that works is simpler: if
you have to raise your voice over it, it is too loud.

UNLOCK ONCE, OR SUBSCRIBE
Seven free nights. After that, one payment unlocks it for good — or subscribe
by the month or the year if you would rather. Either way, the sounds you have
already made keep playing, and your library is never taken away.

A subscription renews each month or year until you cancel it, and is billed to
your Apple Account. Manage or cancel it in Settings › Apple Account ›
Subscriptions.

Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://sleepdrift.app/privacy

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| SleepDrift Monthly | $2.99 | per month |
| SleepDrift Yearly | $19.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| SleepDrift Unlock | $29.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-08-24

No release notes.

## More apps by Karl Groethe

- [SamuraiKu – Samurai Sudoku](https://appshunter.io/ios/app/samuraiku-samurai-sudoku/id6785324275)
- [Netherword: Jogo de palavras](https://appshunter.io/ios/app/netherword-jogo-de-palavras/id6790278635)
- [Samurai Sudoku Solver: Scan](https://appshunter.io/ios/app/samurai-sudoku-solver-scan/id6790636152)
- [Teahouse: Mahjong Solitaire](https://appshunter.io/ios/app/teahouse-mahjong-solitaire/id6791676780)
- [CubeLens: Scan. Learn. Solve.](https://appshunter.io/ios/app/cubelens-scan-learn-solve/id6792565893)

All apps by Karl Groethe: https://appshunter.io/developer/6785324277

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*