# Plena Biofeedback vs MizuMind

The clearest difference is in-app purchases: MizuMind at none against Plena Biofeedback's 2. MizuMind also leads on iOS requirement (13.0 vs 17.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Plena Biofeedback sells 2 in-app purchases, starting at $9.99 per month. MizuMind asks for nothing beyond the download.

Plena Biofeedback ships an update every 6 weeks, MizuMind every 3 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Plena Biofeedback | MizuMind |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 19 MB | 113 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Kenneth Nygren](https://appshunter.io/developer/1861328307) | [Michael Robert Rutherford](https://appshunter.io/developer/1865934230) |

## What reviewers say

### Plena Biofeedback

[App page](https://appshunter.io/ios/app/plena-biofeedback/id6756549507)

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Plena Premium (Monthly) | $9.99 | per month |
| Premium Annual | $59.99 | per year |


### MizuMind

[App page](https://appshunter.io/ios/app/mizumind/id6757311230)

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

**In-app purchases:** none


## Frequently asked questions

### Is Plena Biofeedback free?

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

### Is MizuMind free?

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

### Do Plena Biofeedback or MizuMind have ads?

Neither Plena Biofeedback nor MizuMind shows ads.

### Which is updated more often, Plena Biofeedback or MizuMind?

Plena Biofeedback ships an update every 6 weeks, and MizuMind every 3 weeks. Most recently, Plena Biofeedback was updated on October 30, 2026 and MizuMind on October 31, 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.*