# CardiCalm vs OpenBreath

The clearest difference is in-app purchases: OpenBreath at none against CardiCalm's 1. OpenBreath also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price and ads there is nothing between them.

Both are free to download. CardiCalm sells 1 one-off in-app purchase. OpenBreath asks for nothing beyond the download.

## The numbers

| Metric | CardiCalm | OpenBreath |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | — | Weekly |
| Size | 2 MB | 31 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Bitagent Kft.](https://appshunter.io/developer/6798803650) | [Stanistil](https://appshunter.io/developer/6805899913) |

## What reviewers say

### CardiCalm

[App page](https://appshunter.io/ios/app/cardicalm/id6799185629)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CardiCalm Pro | $6.99 | one-time |


### OpenBreath

[App page](https://appshunter.io/ios/app/openbreath/id6805899911)

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

**In-app purchases:** none


## Frequently asked questions

### Is CardiCalm free?

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

### Is OpenBreath free?

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

### Do CardiCalm or OpenBreath have ads?

Neither CardiCalm nor OpenBreath 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.*