For printing a large good good-quality Guest app QR code on a general poster or brochure, you need to ask someone to design it for you.
For general usage, you can use https://goki.app/dl. It will automatically open the stores based on the os.
Also, to generate a QR code, you can use the following links :
For general usage, they can use https://goki.app/dl. It will automatically open the stores based on the os. Here is the QR code for the link goki.app/dl.
