# Polyrhythm vs Синема Центр

The clearest difference is in-app purchases: Синема Центр at none against Polyrhythm's 3. Синема Центр also leads on update cadence (every 3 weeks vs every 5 weeks). Polyrhythm's advantage is iOS requirement (12.0 vs 15.0). On price, 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. Синема Центр asks for nothing beyond the download.

Polyrhythm ships an update every 5 weeks, Синема Центр every 3 weeks. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Polyrhythm | Синема Центр |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 131 MB | 46 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Stanislav Duplinskiy](https://appshunter.io/developer/1529735040) | [ООО «Дело»](https://appshunter.io/developer/1463284092) |

## What reviewers say

### 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 |


### Синема Центр

[App page](https://appshunter.io/ios/app/id6780955558)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Polyrhythm free?

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

### Is Синема Центр free?

Синема Центр is free to download, with no in-app purchases.

### Do Polyrhythm or Синема Центр have ads?

Neither Polyrhythm nor Синема Центр shows ads.

### Which is updated more often, Polyrhythm or Синема Центр?

Polyrhythm ships an update every 5 weeks, and Синема Центр every 3 weeks. Most recently, Polyrhythm was updated on November 3, 2026 and Синема Центр on October 31, 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.*