I would also recommend a QR and barcode scanner app. I use Bakodo. There are lots out there, but I just chose this one because it works pretty well and I happen to like the icon
FileBrowser
CamScanner
ReaderView
Let me zoom
Launcher
Pages
Dataman Pro
Mactracker
Pcalc
Here
MusicStreamer
AnyFont
Maglight pro - better than stock app
MacID
Duet
Silent Alert
Printer Pro
Google translate / Bing Translator
Converter+