# Calm Awareness vs OxyZen

Calm Awareness and OxyZen are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Calm Awareness ships an update fortnightly, OxyZen every 9 days. The most recent releases landed on October 19, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Calm Awareness | OxyZen |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/oxyzen/id6479008087/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 9 days** |
| Monetization | — | Free |
| Size | 355 MB | 132 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [BrainTrain Inc.](https://appshunter.io/developer/584469134) | [BrainCo Inc](https://appshunter.io/developer/1148192149) |

## What reviewers say

### Calm Awareness

[App page](https://appshunter.io/ios/app/calm-awareness/id6450367887)

**In-app purchases:** none


### OxyZen

[App page](https://appshunter.io/ios/app/oxyzen/id6479008087)

This app uses an EEG-sensing headband to provide real-time neurofeedback for stress relief, better sleep, and improved focus. It offers personalized mindfulness plans, comprehensive reports, and guided meditations to enhance your mental well-being.

**Highlights:** Real-time neurofeedback, Comprehensive bio-data reports, Personalized mindfulness plans, Guided meditations and soundscapes, Group mindfulness practice, Gamified expert challenges

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Calm Awareness free?

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

### Is OxyZen free?

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

### Do Calm Awareness or OxyZen have ads?

Neither Calm Awareness nor OxyZen shows ads.

### Which is updated more often, Calm Awareness or OxyZen?

Calm Awareness ships an update fortnightly, and OxyZen every 9 days. Most recently, Calm Awareness was updated on October 19, 2026 and OxyZen on October 11, 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.*