ZORN FG WebApp
Compaction testing with a Light Weight Deflectometer anywhere, anytime, on any device
The ZORN FG WebApp is the modern, web-based solution for all ZORN Light Weight Deflectometer (ZFG 3000, ZFG 3.1, ZFG 3.0, ZORN Mini for narrow trenches). Without installation or an activation code, measurement data can be imported, edited, evaluated, and sent as high-quality test reports directly on site. The app works on PCs, tablets, and smartphones, can be used anywhere and anytime, can also be used offline after login, and updates automatically. Pre-created project profiles and flexible report variants ensure efficient work - and all this is free of charge for ZORN customers.
Register once and get started right away:
app.zorn-instruments.de
ZORN FG WebApp Videos – Step by step to the perfect test report
Register and login
Settings
Importing, displaying measurement data
Create a customized test report
Create profiles

Digital advantage
ZFG ViewerApp
With the ZFG Viewer App from ZORN Instruments, you can transfer and display the measured values obtained during testing with the Light Weight Deflectometer on your tablet or smartphone. The data transfer takes place via WLAN. You can see the individual values and settlement curves and compare them with each other.
You can send the measurement results as a ZIP file by eMail, for example, to edit them further in the ZORN FG WebApp and to save and/or send them as test protocol(s). This function requires an active internet connection and a configured mail client of the smartphone/tablet.
GPS data of the measurement results, if available, can be viewed via Google Maps.
You can download the app from the Google Play Store or the Mac App Store. Click here for the links.
FAQs about ZORN Apps (Software)
My old reporting software no longer works after replacing my computer. Can I reactivate it?
The software that was available until a few years ago as a locally installed application for documenting measurement results has been discontinued. It was no longer up to date, and external operating system and software updates occasionally caused problems with the application that were beyond our control.
That is why we have introduced the ZORN WebApp, which is available free of charge to ZORN users.
Simply register once and then log in via the ZORN WebApp from any suitable device and get started.
No installation, no dependency on a particular computer and your reporting software is always up to date.
How can I transfer my measurement data to my phone?
I can’t transfer my measurement data to my tablet/smartphone, even though the measuring unit’s Wi-Fi network is active. What could be the problem?
First, make sure that the Wi-Fi network of the measuring unit remains active throughout the entire data transfer.
If you leave the “Wi-Fi Transfer” menu on the electronic measuring unit using the <ON/OFF> button, the Wi-Fi network will also be switched off. The Wi-Fi network must remain active while the data are being transferred.
If the connection still does not work, it can also help to temporarily switch off mobile data on your smartphone. This can prevent the device from automatically switching to the mobile network instead of maintaining the Wi-Fi connection to the measuring unit.
Tip: Keep the “Wi-Fi Transfer” menu open until the data transfer is complete.
How do I create a test report from my measurement data?
It’s quick and easy.
Simply watch our tutorial video “Create a customized test report”. You’ll find it together with our other help and tutorial videos at the top of this page.
The video guides you step by step through the process of creating and customizing your test report.
Can I customize the numbering of my measurements because my report is a continuation of an ongoing project?
Yes, no problem. You can define the starting number for your measurement results under “Settings.”
Simply enter the desired starting number in the field “Series starts with…”.
Your first measurement result in the report will then automatically start with the number you have specified. This allows you to continue the numbering seamlessly within an ongoing project.
I’ve forgotten my password. Can you email it to me?
No. For data protection and security reasons, we cannot send you your password. We also do not have access to your password.
Simply use the “Forgot password?” function on the login page. An email will be sent to the email address associated with your account. Use the link provided in the email to create a new password.
I have registered, but I still can’t log in. What do I need to do?
After registering, you will receive an email containing a confirmation link. You can only log in with your credentials after clicking this link and confirming your registration.
Sometimes the confirmation email ends up in your spam or junk folder, so please check there as well. If you have not received an email, please give us a call. We can check together whether your account has been created and help you complete the activation process: +49 3931 / 25 27 3-2600
What is the difference between the ZORN Apps?
We currently offer three apps that you can use as a ZORN customer. Each has a different purpose and range of functions.
The WebApp is a browser-based application that is independent of the device you use. You can access it on any smartphone, tablet or computer with an internet connection and web browser simply by logging in with your username and password via the ZORN WebApp. It offers the most comprehensive range of functions of our three applications. One special feature is live report generation: enter your project and measurement data on the left-hand side, and the report is displayed simultaneously on the right-hand side exactly as it will appear when printed. The WebApp is always kept up to date automatically. You do not need to install updates or check manually for new versions.
The ViewerApp is an app that you install on your mobile device. Its main purpose is to view your measurement data. You can save and print your results as a “receipt printout”, similar to the printout from the printer of the ZFG 3000 or the mobile printer used with the ZFG 3.1. You can also forward the measurement data by email directly from the app. However, the ViewerApp does not offer the option to create customized test reports.
The ZORN D plus App is the dedicated app for the ZFG D plus Light Weight Deflectometer. It allows you to control the measurement wirelessly and create test reports in a similar way to the WebApp. The D plus App does not offer quite as many functions as the WebApp, but for many users, its features are more than sufficient for everyday work. If you want to create or customize your reports using the WebApp after completing the measurement, you can simply tap the “WebApp” button in the D plus App. This automatically takes you to the web-based application. Depending on your settings, you may need to log in again. Your measurement data, photos and comments are transferred automatically, so you can continue working without having to enter everything again. Other details you put in after measurement will not transferred!
My ZORN D plus App isn’t working. What could be the problem?
There are two different versions of the ZORN D plus App. The D plus App 2025 is intended for Light Weight Deflectometers that were delivered from mid-2025 onwards. Make sure that you are using the correct app version for your ZFG D plus. If you purchased the ZORN D plus as a retrofit kit for an existing instrument, the relevant date is also the purchase date of the D plus electronics, not the original purchase date of the Light Weight Deflectometer. You can find the appropriate app version in our App Downloads section.
Where is my data stored?
Your measurement and project data are stored exclusively on your mobile device. For the browser-based ZORN WebApp, only the data required for your login are stored on our server located in Germany. Your measurement and project data are not stored there. If you delete your account, the login data stored on our server will also be deleted.

