Use APKPure App
Get GreenPass old version APK for Android
Geef uw digitale groene kaart qrcode weer
The app has only one function: to display your digital green card qrcode. As a matter of fact, to display one image, but the only prcatical use is to show your GreenPass on the screen in one touch).
You must first set the qrcode image with the "File" button.
N.B. The GreenPass in the screenshot has been scrambled and is not valid.