We have exactly the same needed, did you find a workaround ?
FYI : Waiting for a clean solution, we copy paste each night :
- Apps folder (containing qvf file with appid in filename and without qvf extention)
- export from DB containit a mapping appID / App name
This was in a first time to backup qlik sense apps, but in a second time we tried to use this file to use in qlik sense desktop.
But, there was a but.... in the qvf file pictures are missing and the deleted sheet was persitent in the app, so we need to schedule "clean" export using api...