PhotoCard is an iOS app that lets users design and send custom postcards in the mail. Users can choose from the app’s library of nature photography, or choose one of their own photos. After writing the postcard, the user can send it as an e-card or pay a small fee to have it printed and sent in the mail. PhotoCard is by Bill Atkinson, an early Apple employee who created MacPaint and played an integral role in the design of the Macintosh user interface. Atkinson is now a nature photographer (the app features Atkinson’s photos). PhotoCard is available on the iTunes store. For more on Atkinson and PhotoCard, see this CNET article.