# CircadiaOS vs FYMind

The clearest difference is in-app purchases: FYMind at none against CircadiaOS's 5. FYMind also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. CircadiaOS sells 5 in-app purchases, starting at $2.99 per 7 days. FYMind asks for nothing beyond the download.

## The numbers

| Metric | CircadiaOS | FYMind |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.5 (11 ratings)](https://appshunter.io/ios/app/circadiaos-sleep-tracker/id6761959749/reviews)** | — |
| Number of ratings | **11** | — |
| Positive reviews | 60.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 days | — |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 0 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [CircadiaOS LLC](https://appshunter.io/developer/1892208236) | [ERIC SAMUEL ANTONOW](https://appshunter.io/developer/6773558567) |

## What reviewers say

### CircadiaOS

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

This app automatically adjusts your bedroom temperature throughout the night to align with your natural sleep cycle. It learns from your wearable data to personalize temperature curves for optimal sleep and recovery.

**Highlights:** Automatic temperature adjustment, Personalized sleep temperature curves, Wearable data integration, Sleep phase tracking, Comparison of sleep nights, Smart thermostat control

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CircadiaOS Premium (Weekly) | $2.99 | per 7 days |
| CircadiaOS Lite Monthly | $6.99 | per month |
| CircadiaOS | $12.99 | per month |
| CircadiaOS Lite Yearly | $49.99 | per year |
| CircadiaOS | $99.99 | per year |


### FYMind

[App page](https://appshunter.io/ios/app/fymind/id6773558565)

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

**In-app purchases:** none


## Frequently asked questions

### Is CircadiaOS free?

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

### Is FYMind free?

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

### Do CircadiaOS or FYMind have ads?

CircadiaOS shows ads; FYMind does not.

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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.*