Hello Pieterp3 , thanks for reaching out,
The app kit accomodates the GLM 400C, have you tried it out? links below.
If you still have a question about desktop app specifically, it might be better to try this contact directly: app dot support at bosch dot com
Thanks! Just let us know any other question you have.
We develop an iOS APP that takes measurement from the GLM400C and once done saves it to an excel file. We used Xcode and Swift.
You can write for more details firstname.lastname@example.org
VSL Tech Consulting.