QR reader

Good Saturday.  I, at 76, have just been gifted with my first smartphone, and I want to add QR/Barcode reader app.  Online research, while good, is also confusing as there are many out there.  I will use mainly for information, and, maybe, to compare prices on more expensive purchase considerations.  Norton support tells me I don't need QR reader with security features as Norton Mobile covers.    Suggestions?

Thank you.

I guess it comes down to what barcodes and QR codes you want to read and decode? You don't want to read and decode them? Then I guess you don't need such a program for your phone. If not then the answer may be context specific. (watch out for if the application asks for excess privileges or contains ads)