# Sound Safe vs PolyRhythmic Metronome

The clearest difference is iOS requirement: PolyRhythmic Metronome at 13.0 against Sound Safe's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sound Safe sells 2 in-app purchases, starting at $0.99 per month and PolyRhythmic Metronome sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Sound Safe ships an update every 6 weeks, PolyRhythmic Metronome every 2 months. The most recent releases landed on October 10, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Sound Safe | PolyRhythmic Metronome |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/sound-safe-pets/id6478652258/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 94 MB | 82 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Sound Safe](https://appshunter.io/developer/1679530450) | [Romeu Beato](https://appshunter.io/developer/1801192254) |

## What reviewers say

### Sound Safe

[App page](https://appshunter.io/ios/app/sound-safe-pets/id6478652258)

This app helps pets overcome noise anxiety with a desensitization program. It offers customizable soundscapes to gradually acclimate them to various noises, promoting calmness and reducing fear in challenging environments.

**Highlights:** Pet noise desensitization program, Customizable soundscapes, Gradual exposure to noises, Reduces pet anxiety, Promotes calmness

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Sounds Yearly | $5.99 | per year |


### PolyRhythmic Metronome

[App page](https://appshunter.io/ios/app/polyrhythmic-metronome/id6760353853)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Polyrhythmic Metronome Pro | $2.99 | per month |
| Polyrhythmic Metronome - Lifetime | $8.99 | one-time |


## Frequently asked questions

### Is Sound Safe free?

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

### Is PolyRhythmic Metronome free?

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

### Do Sound Safe or PolyRhythmic Metronome have ads?

Neither Sound Safe nor PolyRhythmic Metronome shows ads.

### Which is updated more often, Sound Safe or PolyRhythmic Metronome?

Sound Safe ships an update every 6 weeks, and PolyRhythmic Metronome every 2 months. Most recently, Sound Safe was updated on October 10, 2026 and PolyRhythmic Metronome on October 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.*