# CircadiaOS vs Mout

The clearest difference is rating: Mout at 5.0 against CircadiaOS's 3.5. Mout also leads on ads (none vs shown) and iOS requirement (15.1 vs 18.0). CircadiaOS's advantage is update cadence (every 3 days vs every 2 weeks) and ratings volume (11 vs 1). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. CircadiaOS sells 4 in-app purchases, starting at $9.99 per month and Mout sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Mout holds the better App Store score, 5.0 against 3.5. That said, the two scores are not equally well evidenced: CircadiaOS has 11 ratings behind it against 1, so its average is the more settled of the two.

CircadiaOS ships an update every 3 days, Mout every 2 weeks. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | CircadiaOS | Mout |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (11 ratings)](https://appshunter.io/ios/app/circadiaos-sleep-tracker/id6761959749/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/mout/id6790253928/reviews)** |
| Number of ratings | **11** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 2 weeks |
| Monetization | Free with in-app purchases | Freemium |
| Size | 25 MB | 50 MB |
| Requires iOS | 18.0 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 4+ |
| Developer | [CircadiaOS LLC](https://appshunter.io/developer/1892208236) | [Christopher McAndrew](https://appshunter.io/developer/1849043836) |

## What reviewers say

### CircadiaOS

[App page](https://appshunter.io/ios/app/circadiaos-sleep-tracker/id6761959749)

This app learns your body's ideal sleep temperature and automatically adjusts your smart thermostat throughout the night. It uses data from your wearable to personalize a four-phase temperature schedule for optimal sleep recovery. Requires a compatible smart thermostat and sleep-tracking wearable.

**Highlights:** Learns ideal sleep temperature, Personalized four-phase temperature schedule, Integrates with smart thermostats, Syncs with sleep-tracking wearables, Analyzes sleep quality, Two-week calibration period

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CircadiaOS Lite Monthly | $9.99 | per month |
| CircadiaOS | $19.99 | per month |
| CircadiaOS Lite Yearly | $99.99 | per year |
| CircadiaOS | $159.99 | per year |


### Mout

[App page](https://appshunter.io/ios/app/mout/id6790253928)

Plan and document your outdoor adventures with friends. Create hiking groups, record hike details, and build a visual journal of your explorations. Discover new trails and relive your favorite memories on interactive maps.

**Highlights:** Group adventure planning, Personal adventure journal, Interactive adventure maps, Import activity data from Strava, Social sharing and commenting, Premium topographic and 3D maps

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mout Premium | $4.99 | per month |
| Mout Premium | $39.99 | per year |


## Frequently asked questions

### Is CircadiaOS free?

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

### Is Mout free?

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

### Which has better reviews, CircadiaOS or Mout?

Mout is rated higher. CircadiaOS averages 3.5 out of 5 from 11 ratings, while Mout averages 5.0 from 1 ratings.

### Do CircadiaOS or Mout have ads?

CircadiaOS shows ads; Mout does not.

### Which is updated more often, CircadiaOS or Mout?

CircadiaOS ships an update every 3 days, and Mout every 2 weeks. Most recently, CircadiaOS was updated on October 24, 2026 and Mout on October 13, 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.*