# ShiftRhythm vs Quiet Sleep Sounds

The clearest difference is ads: ShiftRhythm at none against Quiet Sleep Sounds's shown. Quiet Sleep Sounds's advantage is iOS requirement (15.0 vs 17.0). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. ShiftRhythm sells 3 in-app purchases, starting at $2.99 per month and Quiet Sleep Sounds sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | ShiftRhythm | Quiet Sleep Sounds |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quiet-sleep-sounds/id6779743651/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 days | — |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 17 MB | 55 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jaeyoun Kim](https://appshunter.io/developer/6772886377) | [Krishnamachari Manohar](https://appshunter.io/developer/1198392358) |

## What reviewers say

### ShiftRhythm

[App page](https://appshunter.io/ios/app/shiftrhythm-shift-sleep/id6776639759)

This app helps night shift workers optimize their sleep and light exposure based on their unique work schedules. It provides personalized guidance for sleep, naps, and light interaction to align with your body's natural circadian rhythm.

**Highlights:** Personalized sleep and nap timing, Light exposure guidance, Circadian rhythm insights (DLMO, CBTmin), Sleep score and debt tracking, Customizable roster presets, Apple Watch app and widgets

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Yearly | $14.99 | per year |
| Lifetime | $39.99 | one-time |


### Quiet Sleep Sounds

[App page](https://appshunter.io/ios/app/quiet-sleep-sounds/id6779743651)

Drift off to sleep with a variety of calming sounds like brown noise, rain, and ocean waves. This app offers a simple interface with a sleep timer and background playback. Enjoy a one-time purchase option to remove ads and unlock advanced features.

**Highlights:** Brown, pink, and green noise generation, Nature and ambient soundscapes, Customizable sound mixing, Gentle sleep timer, Background playback, Offline functionality

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleep Sounds Pro | $4.99 | one-time |


## Frequently asked questions

### Is ShiftRhythm free?

ShiftRhythm is free to download, with in-app purchases available.

### Is Quiet Sleep Sounds free?

Quiet Sleep Sounds is free to download, with in-app purchases available.

### Do ShiftRhythm or Quiet Sleep Sounds have ads?

Quiet Sleep Sounds shows ads; ShiftRhythm does not.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*