# Camera Heart Rate Variability vs Yinstill

The clearest difference is price: Yinstill at Free against Camera Heart Rate Variability's $6.99. Yinstill also leads on update cadence (every 3 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Yinstill is free to download; Camera Heart Rate Variability costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Camera Heart Rate Variability ships an update every 4 months, Yinstill every 3 weeks. The most recent releases landed on November 13, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Camera Heart Rate Variability | Yinstill |
| --- | --- | --- |
| Price | $6.99 | **Free** |
| Rating | **[2.8 (8 ratings)](https://appshunter.io/ios/app/camera-heart-rate-variability/id788460316/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 27.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Paid | — |
| Size | 23 MB | 49 MB |
| Requires iOS | 17.6 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [A.S.M.A. B.V.](https://appshunter.io/developer/1066843463) | [Yinstill](https://appshunter.io/developer/1896496036) |

## What reviewers say

### Camera Heart Rate Variability

[App page](https://appshunter.io/ios/app/camera-heart-rate-variability/id788460316)

Measure heart rate variability (HRV) using your phone's camera and flash. Detects heartbeats via photoplethysmography to compute beat-to-beat intervals and HRV in real time. Offers detailed time and frequency domain features, export options, and historical trend analysis.

**Highlights:** Real-time heart rate and pulse waveform, RR intervals with artifact correction, Time and frequency domain HRV features, Analysis windows from 30 seconds to 5 minutes, Export data as CSV, Write to Apple Health, Optional breathing pacer

**Features:** Vision Pro support

**In-app purchases:** none


### Yinstill

[App page](https://appshunter.io/ios/app/yinstill/id6767648073)

**In-app purchases:** none


## Frequently asked questions

### Is Camera Heart Rate Variability free?

Camera Heart Rate Variability costs $6.99, with no in-app purchases.

### Is Yinstill free?

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

### Do Camera Heart Rate Variability or Yinstill have ads?

Neither Camera Heart Rate Variability nor Yinstill shows ads.

### Which is updated more often, Camera Heart Rate Variability or Yinstill?

Camera Heart Rate Variability ships an update every 4 months, and Yinstill every 3 weeks. Most recently, Camera Heart Rate Variability was updated on November 13, 2026 and Yinstill on November 5, 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.*