# iSoundBath vs ZirbelSignal

The clearest difference is in-app purchases: iSoundBath at none against ZirbelSignal's 1. ZirbelSignal's advantage is iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. ZirbelSignal sells 1 in-app purchase, starting at $0.99 per month. iSoundBath asks for nothing beyond the download.

## The numbers

| Metric | iSoundBath | ZirbelSignal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 400 MB | 140 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stephannie Jones](https://appshunter.io/developer/1734868781) | [Daniel Ovadia](https://appshunter.io/developer/1835498181) |

## What reviewers say

### iSoundBath

[App page](https://appshunter.io/ios/app/isoundbath/id6749166753)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


### ZirbelSignal

[App page](https://appshunter.io/ios/app/zirbelsignal/id6758164112)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $0.99 | per month |


## Frequently asked questions

### Is iSoundBath free?

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

### Is ZirbelSignal free?

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

### Do iSoundBath or ZirbelSignal have ads?

Neither iSoundBath nor ZirbelSignal shows ads.

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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.*