HRQR app for iPhone and iPad

Generate HRQR codes in your web browser: http://www.hrqr.org
Decode them with this app.

HRQR is a visual Machine Readable Quick Response Code that can replace usual barcode and QR Code applications. The code can be read by humans in the same way it can be read by machines. Instead of relaying on a computational error correction, the system allows a human to read the message and therefore is able to reinterpret errors in the visual image.

What do these cyan buttons mean?
A: Shows you the Alphabet used for HRQR
S: Gives you the Setup Menu and allows you to generate HRQR codes right in your device
B: Allows you to go back.