For Android devices, there's also MIT App Inventor, which is a very scratch-like environment for writing mobile apps, available here: http://appinventor.mit.ed

For Android devices, there's also MIT App Inventor, which is a very scratch-like environment for writing mobile apps, available here: http://appinventor.mit.edu http://appinventor.mit.edu In addition to basic I/O and animations, it's able to deal with a lot of the device capabilities, including SMS, GPS, dealing with the camera, and so forth. Unfortunately, I don't know of any similar environment for programming iThings --- Apple fairly famously rejected a Scratch port from the app store in 2010: http://wiki.scratch.mit.edu/wiki/Scratch_Viewer http://wiki.scratch.mit.edu/wiki/Scratch_Viewer although a "Scratch player" for Android is in alpha, and apparently, people are also working on pure HTML versions.