# CO2 sensor vs Thermal Camera

The clearest difference is rating: Thermal Camera at 4.5 against CO2 sensor's 3.4. Thermal Camera also leads on update cadence (every 5 days vs every 12 months) and ratings volume (49 vs 7). CO2 sensor's advantage is in-app purchases (none vs 1) and device support (4 vs 1). On price and ads there is nothing between them.

Both are free to download. Thermal Camera sells 1 in-app purchase, starting at $6.99 per 7 days. CO2 sensor asks for nothing beyond the download.

Thermal Camera holds the better App Store score, 4.5 against 3.4. That said, the two scores are not equally well evidenced: Thermal Camera has 49 ratings behind it against 7, so its average is the more settled of the two.

CO2 sensor ships an update every 12 months, Thermal Camera every 5 days. The most recent releases landed on October 3, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | CO2 sensor | Thermal Camera |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (7 ratings)](https://appshunter.io/ios/app/co2-sensor/id1643286074/reviews) | **[4.5 (49 ratings)](https://appshunter.io/ios/app/thermal-camera-night-vision/id6739632416/reviews)** |
| Number of ratings | 7 | **49** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 12 months | **Every 5 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 0 MB | 16 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [sighmon](https://appshunter.io/developer/377815161) | [Tamaz Bairamovi](https://appshunter.io/developer/1786370037) |

## What reviewers say

### CO2 sensor

[App page](https://appshunter.io/ios/app/co2-sensor/id1643286074)

Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.

**Highlights:** Real-time CO2, temperature, and humidity readings, Bluetooth sensor integration, Save readings with location, iCloud sync across devices, Map view of saved readings, Open source code available

**Features:** Vision Pro support

**In-app purchases:** none


### Thermal Camera

[App page](https://appshunter.io/ios/app/thermal-camera-night-vision/id6739632416)

Transform your photos with unique thermal filters and adjust their sensitivity for a personalized artistic vision. Save and share your creations easily with a simple, user-friendly interface. This app offers a gateway to extraordinary art for photographers of all levels.

**Highlights:** Capture photos with thermal filters, Adjust filter sensitivity, Save creations to device, Share photos effortlessly, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Thermal & Night vision access | $6.99 | per 7 days |


## Frequently asked questions

### Is CO2 sensor free?

CO2 sensor is free to download, with no in-app purchases.

### Is Thermal Camera free?

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

### Which has better reviews, CO2 sensor or Thermal Camera?

Thermal Camera is rated higher. CO2 sensor averages 3.4 out of 5 from 7 ratings, while Thermal Camera averages 4.5 from 49 ratings.

### Do CO2 sensor or Thermal Camera have ads?

Neither CO2 sensor nor Thermal Camera shows ads.

### Which is updated more often, CO2 sensor or Thermal Camera?

CO2 sensor ships an update every 12 months, and Thermal Camera every 5 days. Most recently, CO2 sensor was updated on October 3, 2026 and Thermal Camera on September 10, 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.*