Xray QUIZ is available in both Android and IOS.
Apps are not certified Google Play or Apple Store, you must allow the installation from the parameters of your device
For more details about the intallation see at : https://docs.thunkable.com/thunkable-cross-platform/download

Download from Xray Google Drive https://drive.google.com/open?id=1VNo7_f3HetpGQrU8v8Lf1bCTIes_FYLN	Download from Thunkable.com https://x.thunkable.com/projects/5bf580652ba83464bfda6718

For Android (see also Timeline Android Apps)

For IOS