With the Shortcuts app it's very easy to make a QR encoder/decoder in iOS.
Why would you want to decode or encode QR codes? You can read the information embedded in all the QR codes you see around you and you can make QR codes out of information you want to share. Your website, email or postal address, phone numbers, Wi-Fi passwords, commercial messages, quiz walk questions, poems or almost any not too long text.
If you think a QR code shortcut could be useful, download it below.
Download the free Shortcuts app from App Store if you haven't already.