# testo Thermography vs Contia Authenticator

The clearest difference is update cadence: Contia Authenticator at fortnightly against testo Thermography's every 6 months. testo Thermography's advantage is iOS requirement (13 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

testo Thermography ships an update every 6 months, Contia Authenticator fortnightly. The most recent releases landed on October 29, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | testo Thermography | Contia Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/testo-thermography/id1123010537/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 31.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | Free | — |
| Size | 63 MB | 33 MB |
| Requires iOS | **13** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Testo SE & Co. KGaA](https://appshunter.io/developer/966489178) | [Contia Development](https://appshunter.io/developer/523414256) |

## What reviewers say

### testo Thermography

[App page](https://appshunter.io/ios/app/testo-thermography/id1123010537)

This free application enhances the functionality of specific testo thermal imagers. It allows users to view live images, remotely control the device, and transfer stored images for analysis and report creation. Reports and images can be easily shared via email or cloud services.

**Highlights:** Live thermal imager view, Remote device control, Image and data transmission, Thermal image analysis, Report creation, Email and cloud sharing

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

**In-app purchases:** none


### Contia Authenticator

[App page](https://appshunter.io/ios/app/contia-authenticator/id6760599060)

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

**In-app purchases:** none


## Frequently asked questions

### Is testo Thermography free?

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

### Is Contia Authenticator free?

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

### Do testo Thermography or Contia Authenticator have ads?

Neither testo Thermography nor Contia Authenticator shows ads.

### Which is updated more often, testo Thermography or Contia Authenticator?

testo Thermography ships an update every 6 months, and Contia Authenticator fortnightly. Most recently, testo Thermography was updated on October 29, 2026 and Contia Authenticator on October 25, 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.*