# Atmotube PRO 2 vs Sensor Bio

The clearest difference is rating: Sensor Bio at 5.0 against Atmotube PRO 2's 3.5. Sensor Bio also leads on update cadence (weekly vs every 3 weeks). Atmotube PRO 2's advantage is monetization model (free vs ad-supported). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Sensor Bio holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 4 and 10 respectively.

Atmotube PRO 2 ships an update every 3 weeks, Sensor Bio weekly. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Atmotube PRO 2 | Sensor Bio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (4 ratings)](https://appshunter.io/ios/app/atmotube-pro-2/id6744324330/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/sensor-bio/id6745620963/reviews)** |
| Number of ratings | 4 | **10** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | **Free** | Ad-supported |
| Size | 36 MB | 166 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Atmotech Inc.](https://appshunter.io/developer/882288185) | [Sensr Biotech, LLC](https://appshunter.io/developer/1812560181) |

## What reviewers say

### Atmotube PRO 2

[App page](https://appshunter.io/ios/app/atmotube-pro-2/id6744324330)

This app connects to a portable device to provide real-time insights into the air you breathe, both indoors and outdoors. Monitor pollutants like CO2 and PM2.5, track environmental factors, and receive alerts for unhealthy air quality to make informed health decisions.

**Highlights:** Real-time air quality monitoring, Track CO2, PM2.5, temperature, humidity, Location-based measurement logging, Historical data and trend analysis, Smart alerts for unhealthy air, Device sensor configuration and updates

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 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, Validated heart rate and HRV tracking, Detailed sleep stage analysis, Remote monitoring capabilities, Personalized health insights

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

**In-app purchases:** none


## Frequently asked questions

### Is Atmotube PRO 2 free?

Atmotube PRO 2 is free to download, with no in-app purchases.

### Is Sensor Bio free?

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

### Which has better reviews, Atmotube PRO 2 or Sensor Bio?

Sensor Bio is rated higher. Atmotube PRO 2 averages 3.5 out of 5 from 4 ratings, while Sensor Bio averages 5.0 from 10 ratings.

### Do Atmotube PRO 2 or Sensor Bio have ads?

Neither Atmotube PRO 2 nor Sensor Bio shows ads.

### Which is updated more often, Atmotube PRO 2 or Sensor Bio?

Atmotube PRO 2 ships an update every 3 weeks, and Sensor Bio weekly. Most recently, Atmotube PRO 2 was updated on November 5, 2026 and Sensor Bio on October 30, 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.*