# MoodRx vs Cairn

The clearest difference is iOS requirement: Cairn at 13.0 against MoodRx's 15.1. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MoodRx sells 3 in-app purchases, starting at $3.99 per month and Cairn sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | MoodRx | Cairn |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Size | 48 MB | 44 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Daniel Zimmer](https://appshunter.io/developer/1887122371) | [Huy Nguyen](https://appshunter.io/developer/1896764157) |

## What reviewers say

### MoodRx

[App page](https://appshunter.io/ios/app/moodrx/id6760980243)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MoodRx+ Monthly | $3.99 | per month |
| MoodRx+ Yearly | $24.99 | per year |
| MoodRx Pro | $9.99 | one-time |


### Cairn

[App page](https://appshunter.io/ios/app/cairn-sober-streak-tracker/id6781625086)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cairn Reflection Monthly | $4.99 | per month |
| Cairn Reflection Annually | $39.99 | per year |


## Frequently asked questions

### Is MoodRx free?

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

### Is Cairn free?

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

### Do MoodRx or Cairn have ads?

Neither MoodRx nor Cairn 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.*