Comparison

Viessmann Access vs QTRIX Viewer

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Viessmann Access

Read full description

Viessmann Access app - The secured and simple solution for passwordless authentication to Viessmann web applications. Viessmann Access is the app for strong authentication to Viessmann web applications without entering a password or second factor. After setting up and registering your account, you receive a push notification when you log in, which is released by you using your secure PIN or, depending on the device, biometric security features such as facial recognition or fingerprint. And you are already logged in.

About

QTRIX Viewer

Features
Read full description

With QTRIX Viewer you'll have universal access to all the information from your QTRIX platform. You can navigate quickly and securely to the desired information at any time via the intuitive interface. Through optimized loading functions it is possible to access even thousands of data sets without delay. Furthermore, you can use the extensive full-text search and the high-resolution image viewer to always have access to the latest findings from the QTRIX platform during meetings and presentations. The connection to the QTRIX platform is of course protected by a user administration. Only after entering the login data, the APP connects directly to the user account.

Screenshots

Viessmann Access4 screens
QTRIX Viewer4 screens

Verdict

The call

The clearest difference is iOS requirement: Viessmann Access at 12 against QTRIX Viewer's 15.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

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

UpkeepUpdate frequency

Viessmann Access ships an update every 4 months, QTRIX Viewer every 6 months. The most recent releases landed on October 11, 2026 and September 27, 2026 respectively.

Scorecard1 real difference ยท 5 level
Viessmann Access versus QTRIX Viewer: the parameters behind the verdict, then further details
ParameterViessmann AccessQTRIX Viewer
PriceFreeFree
Update frequencyEvery 4 months โ€” betterEvery 6 months
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPodiPhone, iPad, iPod โ€” better
Requires iOS12 โ€” better15.2
Further details โ€” not scored
Size52 MB2 MB
Age rating4+4+
DeveloperViessmann IT Service GmbHCalidat GmbH

In-app purchases

None

Viessmann Access

No in-app purchases

None

QTRIX Viewer

No in-app purchases

Questions

Is Viessmann Access free?
Viessmann Access is free to download, with no in-app purchases.
Is QTRIX Viewer free?
QTRIX Viewer is free to download, with no in-app purchases.
Do Viessmann Access or QTRIX Viewer have ads?
Neither Viessmann Access nor QTRIX Viewer shows ads.
Which is updated more often, Viessmann Access or QTRIX Viewer?
Viessmann Access ships an update every 4 months, and QTRIX Viewer every 6 months. Most recently, Viessmann Access was updated on October 11, 2026 and QTRIX Viewer on September 27, 2026.

Other comparisons