# Optimal HRV vs Shift Adapt

The clearest difference is review sentiment: Shift Adapt at 100% against Optimal HRV's 17%. Shift Adapt also leads on rating (5.0 vs 3.0) and in-app purchases (none vs 3). Optimal HRV's advantage is update cadence (fortnightly vs every 3 months) and ratings volume (24 vs 2). 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. Shift Adapt asks for nothing beyond the download.

Shift Adapt holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Optimal HRV has 24 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 17% of Optimal HRV's written reviews are positive against 100% of Shift Adapt's.

Optimal HRV ships an update fortnightly, Shift Adapt every 3 months. The most recent releases landed on September 21, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Optimal HRV | Shift Adapt |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (24 ratings)](https://appshunter.io/ios/app/optimal-hrv-biofeedback/id1501292206/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/shift-adapt/id6469709048/reviews)** |
| Number of ratings | **24** | 2 |
| Positive reviews | 16.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 52 MB | 80 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Optimal, LLC](https://appshunter.io/developer/1501292205) | [Unscared Inc](https://appshunter.io/developer/1436460208) |

## What reviewers say

### Optimal HRV

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

Monitor, analyze, and improve your Heart Rate Variability (HRV) scores. This app offers personalized training, biofeedback, and stress-reducing activities to enhance health, reduce stress, and improve mental clarity.

**Highlights:** Real-time HRV monitoring, Personalized training plans, Guided meditation and breathing exercises, Comprehensive data analysis, Stress response insights, Biofeedback optimization

**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 |


### Shift Adapt

[App page](https://appshunter.io/ios/app/shift-adapt/id6469709048)

Log your workouts and track your performance from anywhere. Access daily breath practices to enhance your training experience. Expand your fitness journey with this comprehensive tool.

**Highlights:** Workout logging, Performance tracking, Daily breath practices, Access training from anywhere, Expand fitness experience

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Optimal HRV free?

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

### Is Shift Adapt free?

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

### Which has better reviews, Optimal HRV or Shift Adapt?

Shift Adapt is rated higher. Optimal HRV averages 3.0 out of 5 from 24 ratings, while Shift Adapt averages 5.0 from 2 ratings.

### Do Optimal HRV or Shift Adapt have ads?

Neither Optimal HRV nor Shift Adapt shows ads.

### Which is updated more often, Optimal HRV or Shift Adapt?

Optimal HRV ships an update fortnightly, and Shift Adapt every 3 months. Most recently, Optimal HRV was updated on September 21, 2026 and Shift Adapt on September 14, 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.*