# Sensor Bio vs Dirt Factor

The clearest difference is in-app purchases: Sensor Bio at none against Dirt Factor's 2. Sensor Bio also leads on ratings volume (10 vs 2). Dirt Factor's advantage is update cadence (every 2 days vs weekly) and iOS requirement (15.0 vs 18.0). On price, rating, ads and device support there is nothing between them.

Both are free to download. Dirt Factor sells 2 in-app purchases, starting at $12.00 per month. Sensor Bio asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for Sensor Bio against 5.0 for Dirt Factor. That said, the two scores are not equally well evidenced: Sensor Bio has 10 ratings behind it against 2, so its average is the more settled of the two.

Sensor Bio ships an update weekly, Dirt Factor every 2 days. The most recent releases landed on November 12, 2026 and November 13, 2026 respectively.

## The numbers

| Metric | Sensor Bio | Dirt Factor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (10 ratings)](https://appshunter.io/ios/app/sensor-bio/id6745620963/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/dirt-factor/id6823432067/reviews) |
| Number of ratings | **10** | 2 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 2 days** |
| Monetization | Free | — |
| Size | 166 MB | 28 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [Sensr Biotech, LLC](https://appshunter.io/developer/1812560181) | [Kaizen Endurance](https://appshunter.io/developer/6823432069) |

## What reviewers say

### Sensor Bio

[App page](https://appshunter.io/ios/app/sensor-bio/id6745620963)

This platform uses biosensors to remotely monitor key health metrics like heart rate, HRV, and sleep stages. It provides personalized insights and is designed for general fitness and wellness purposes.

**Highlights:** Clinical-grade biometrics (heart rate, HRV, respiratory rate), Detailed sleep tracking (stages, biometrics, movement), Remote monitoring functionality, Personalized health insights, Validated biosensor technology

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

**In-app purchases:** none


### Dirt Factor

[App page](https://appshunter.io/ios/app/dirt-factor/id6823432067)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Dirt Factor Premium Monthly | $12.00 | per month |
| Dirt Factor Premium Yearly | $99.00 | per year |


## Frequently asked questions

### Is Sensor Bio free?

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

### Is Dirt Factor free?

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

### Which has better reviews, Sensor Bio or Dirt Factor?

Sensor Bio and Dirt Factor are both rated 5.0 out of 5 on the App Store, from 10 and 2 ratings respectively.

### Do Sensor Bio or Dirt Factor have ads?

Neither Sensor Bio nor Dirt Factor shows ads.

### Which is updated more often, Sensor Bio or Dirt Factor?

Sensor Bio ships an update weekly, and Dirt Factor every 2 days. Most recently, Sensor Bio was updated on November 12, 2026 and Dirt Factor on November 13, 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.*