# こよみのこよみ 2023 vs Polyrhythm

The clearest difference is in-app purchases: こよみのこよみ 2023 at none against Polyrhythm's 3. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Polyrhythm sells 3 in-app purchases, starting at $1.99 per 7 days. こよみのこよみ 2023 asks for nothing beyond the download.

こよみのこよみ 2023 ships an update monthly, Polyrhythm every 5 weeks. Both last shipped on November 3, 2026.

## The numbers

| Metric | こよみのこよみ 2023 | Polyrhythm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.1 (9 ratings)](https://appshunter.io/ios/app/polyrhythm-relaxing-sounds/id6462398544/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 29 MB | 131 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ichiro maeta](https://appshunter.io/developer/1499323733) | [Stanislav Duplinskiy](https://appshunter.io/developer/1529735040) |

## What reviewers say

### こよみのこよみ 2023

[App page](https://appshunter.io/ios/app/2023/id6446474764)

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

**In-app purchases:** none


### Polyrhythm

[App page](https://appshunter.io/ios/app/polyrhythm-relaxing-sounds/id6462398544)

Create a personalized soundscape for relaxation, sleep, or meditation. Explore a variety of organic and synthesized instruments, ambient background sounds, and AI-generated presets. Customize and save your favorite sound combinations for a tranquil experience.

**Highlights:** Variety of sound presets, Organic and synthesized instruments, Background ambient sounds, AI preset generator, Advanced preset customization, Create and save custom presets

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access to app functions | $1.99 | per 7 days |
| Full access to app functions | $5.99 | per month |
| Full access to app functions | $12.99 | per 3 months |


## Frequently asked questions

### Is こよみのこよみ 2023 free?

こよみのこよみ 2023 is free to download, with no in-app purchases.

### Is Polyrhythm free?

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

### Do こよみのこよみ 2023 or Polyrhythm have ads?

Neither こよみのこよみ 2023 nor Polyrhythm shows ads.

### Which is updated more often, こよみのこよみ 2023 or Polyrhythm?

こよみのこよみ 2023 ships an update monthly, and Polyrhythm every 5 weeks. Most recently, こよみのこよみ 2023 was updated on November 3, 2026 and Polyrhythm on November 3, 2026.

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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.*