# Optimal HRV vs CalmPulse リラックスチェック

The clearest difference is in-app purchases: CalmPulse リラックスチェック at none against Optimal HRV's 3. CalmPulse リラックスチェック also leads on update cadence (every 2 days vs fortnightly). Optimal HRV's advantage is iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Optimal HRV sells 3 in-app purchases, starting at $9.99 per month. CalmPulse リラックスチェック asks for nothing beyond the download.

Optimal HRV ships an update fortnightly, CalmPulse リラックスチェック every 2 days. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Optimal HRV | CalmPulse リラックスチェック |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (24 ratings)](https://appshunter.io/ios/app/optimal-hrv-biofeedback/id1501292206/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 16.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 57 MB | 15 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Optimal, LLC](https://appshunter.io/developer/1501292205) | [XEROGRAPHIX](https://appshunter.io/developer/314776003) |

## What reviewers say

### Optimal HRV

[App page](https://appshunter.io/ios/app/optimal-hrv-biofeedback/id1501292206)

This app uses heart rate variability (HRV) and biofeedback to help you manage stress and improve your body's ability to calm down. It offers guided sessions, personalized breathing rhythms, and real-time feedback to train your nervous system for better stress resilience.

**Highlights:** Real-time HRV data and biofeedback, Personalized breathing rhythm identification, Guided mindfulness sessions, Daily check-ins and progress tracking, External sensor integration for accuracy, Multi-language support

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $9.99 | per month |
| 6 Month | $47.99 | per 6 months |
| One Year | $59.99 | per year |


### CalmPulse リラックスチェック

[App page](https://appshunter.io/ios/app/calmpulse/id6756478591)

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

**In-app purchases:** none


## Frequently asked questions

### Is Optimal HRV free?

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

### Is CalmPulse リラックスチェック free?

CalmPulse リラックスチェック is free to download, with no in-app purchases.

### Do Optimal HRV or CalmPulse リラックスチェック have ads?

Neither Optimal HRV nor CalmPulse リラックスチェック shows ads.

### Which is updated more often, Optimal HRV or CalmPulse リラックスチェック?

Optimal HRV ships an update fortnightly, and CalmPulse リラックスチェック every 2 days. Most recently, Optimal HRV was updated on October 29, 2026 and CalmPulse リラックスチェック on October 25, 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.*