# HRV4Biofeedback vs Quotusphere

The clearest difference is price: Quotusphere at Free against HRV4Biofeedback's $9.99. HRV4Biofeedback's advantage is in-app purchases (none vs 2) and chart position (#67 vs unranked). On update cadence, ads and device support there is nothing between them.

Quotusphere is free to download; HRV4Biofeedback costs $9.99 up front. Quotusphere sells 2 in-app purchases, starting at $0.99 per 3 months. HRV4Biofeedback asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | HRV4Biofeedback | Quotusphere |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[3.4 (29 ratings)](https://appshunter.io/ios/app/hrv4biofeedback/id1504638613/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 53.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free | — |
| Best chart rank | **#67** | — |
| Size | 138 MB | 21 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [A.S.M.A. B.V.](https://appshunter.io/developer/1066843463) | [22of8 GmbH](https://appshunter.io/developer/502617768) |

## What reviewers say

### HRV4Biofeedback

[App page](https://appshunter.io/ios/app/hrv4biofeedback/id1504638613)

**Currently charting:** #67 Top Paid · Lifestyle (US App Store)

This app uses your phone's camera to measure heart rate variability and provide biofeedback. It guides you through deep breathing exercises to improve self-regulation and manage stress. Track your progress and explore correlations with your daily experiences.

**Highlights:** Camera-based HRV measurement, Real-time heart rate feedback, Resonant frequency analysis, Biofeedback score, Subjective annotations, HealthKit integration, Bluetooth sensor support

**Features:** Vision Pro support

**In-app purchases:** none


### Quotusphere

[App page](https://appshunter.io/ios/app/quotusphere/id6502550907)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 3 Months | $0.99 | per 3 months |
| Premium 1 Year | $2.99 | per year |


## Frequently asked questions

### Is HRV4Biofeedback free?

HRV4Biofeedback costs $9.99, with no in-app purchases.

### Is Quotusphere free?

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

### Do HRV4Biofeedback or Quotusphere have ads?

Neither HRV4Biofeedback nor Quotusphere shows ads.

### Which is updated more often, HRV4Biofeedback or Quotusphere?

HRV4Biofeedback ships an update every 2 months, and Quotusphere every 2 months. Most recently, HRV4Biofeedback was updated on October 17, 2026 and Quotusphere on October 7, 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.*