QR Code Displayer generates a clean, easy-to-scan version of any QR code.

The app works like this:

You select an image containing a QR code on your phone or "share" it to this app.
The app decodes the original code using math!
A brand new, high-resolution QR code is generated containing the exact same content.
The new code is drawn with black edges on a white background.
You then have the option to enter display mode, where screen brightness is maximized and stays awake to assist with scanning.
You also can give your new QR code a title and save it to use later.
Or even see what is the content of the qr code and copy it!

This app is fully open-source, contains no ads or unnecessary permissions, and processes all data entirely offline on your own device.