ProcessingJS Reader is a great way to preview your ProcessingJS apps on a Windows Phone. Simply package up your sketch into a pde file (the file format for native Processing sketches) and send it in an email to yourself. The Reader app will detect your file and install the sketch into your list of sketches. Once a sketch is installed, you have the option to share the sketch to other Windows Phones via NFC (where available) or export the sketch as text in an email. The app comes with 9 pre-installed sketches to view or export, courtesy of the Channel 9 Coding4Fun team at Microsoft.