# Heart Rate Variability + vs Plena Biofeedback

The clearest difference is update cadence: Plena Biofeedback at every 6 weeks against Heart Rate Variability +'s every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Heart Rate Variability + sells 5 in-app purchases, starting at $4.99 per 7 days and Plena Biofeedback sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Heart Rate Variability + ships an update every 4 months, Plena Biofeedback every 6 weeks. The most recent releases landed on September 19, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Heart Rate Variability + | Plena Biofeedback |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 6 weeks** |
| Size | 54 MB | 19 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [MD SOFTWARE SERVICES LTD](https://appshunter.io/developer/1843392499) | [Kenneth Nygren](https://appshunter.io/developer/1861328307) |

## What reviewers say

### Heart Rate Variability +

[App page](https://appshunter.io/ios/app/heart-rate-variability-plus/id6753306246)

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Weekly-Trial | $4.99 | per 7 days |
| Monthly | $12.99 | per month |
| Yearly | $39.99 | per year |
| Lifetime | $59.99 | one-time |


### 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 |


## Frequently asked questions

### Is Heart Rate Variability + free?

Heart Rate Variability + is free to download, with in-app purchases available.

### Is Plena Biofeedback free?

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

### Do Heart Rate Variability + or Plena Biofeedback have ads?

Neither Heart Rate Variability + nor Plena Biofeedback shows ads.

### Which is updated more often, Heart Rate Variability + or Plena Biofeedback?

Heart Rate Variability + ships an update every 4 months, and Plena Biofeedback every 6 weeks. Most recently, Heart Rate Variability + was updated on September 19, 2026 and Plena Biofeedback on September 12, 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.*