# cardioSleep25 vs SomniRx

The clearest difference is iOS requirement: cardioSleep25 at 14.0 against SomniRx's 16.4. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on September 14, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | cardioSleep25 | SomniRx |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Size | 62 MB | 44 MB |
| Requires iOS | **14.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [key4events](https://appshunter.io/developer/490630030) | [THOMERA](https://appshunter.io/developer/1883724066) |

## What reviewers say

### cardioSleep25

[App page](https://appshunter.io/ios/app/cardiosleep25/id6746629544)

**Features:** macOS Compatibility

**In-app purchases:** none


### SomniRx

[App page](https://appshunter.io/ios/app/somnirx/id6761053003)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is cardioSleep25 free?

cardioSleep25 is free to download, with no in-app purchases.

### Is SomniRx free?

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

### Do cardioSleep25 or SomniRx have ads?

Neither cardioSleep25 nor SomniRx shows ads.

### Which is updated more often, cardioSleep25 or SomniRx?

cardioSleep25 ships an update every 2 weeks, and SomniRx every 2 weeks. Most recently, cardioSleep25 was updated on September 14, 2026 and SomniRx on September 9, 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.*