# Plena Biofeedback vs Coherence App

The clearest difference is price: Plena Biofeedback at Free against Coherence App's $3.99. Coherence App's advantage is in-app purchases (none vs 2) and update cadence (every 6 days vs every 6 weeks). On ads, device support and iOS requirement there is nothing between them.

Plena Biofeedback is free to download; Coherence App costs $3.99 up front. Plena Biofeedback sells 2 in-app purchases, starting at $9.99 per month. Coherence App asks for nothing beyond the download.

Plena Biofeedback ships an update every 6 weeks, Coherence App every 6 days. The most recent releases landed on September 12, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Plena Biofeedback | Coherence App |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 6 days** |
| Monetization | — | Paid |
| Size | 19 MB | 15 MB |
| Requires iOS | **17.6** | 18.6 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Kenneth Nygren](https://appshunter.io/developer/1861328307) | [TICTACTEL](https://appshunter.io/developer/1616300449) |

## 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 |


### Coherence App

[App page](https://appshunter.io/ios/app/coherence-app/id6759622658)

This app uses guided breathing and HRV analysis to provide insights into your body's recovery and autonomic behavior. It offers structured physiological evaluations and biofeedback through Apple Watch integration.

**Highlights:** ITFD-guided breathing sessions, Heart Rate Variability (HRV) analysis, Autonomic behavior evaluation, Haptic and color cue guidance, Real-time graphical biofeedback, ITFD score and session interpretation, Integration with Apple Watch

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Plena Biofeedback free?

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

### Is Coherence App free?

Coherence App costs $3.99, with no in-app purchases.

### Do Plena Biofeedback or Coherence App have ads?

Neither Plena Biofeedback nor Coherence App shows ads.

### Which is updated more often, Plena Biofeedback or Coherence App?

Plena Biofeedback ships an update every 6 weeks, and Coherence App every 6 days. Most recently, Plena Biofeedback was updated on September 12, 2026 and Coherence App on September 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*