Photowall for Chromecast is one of those rare official Google
apps that makes its debut on iOS instead of Android. In fact, we
can't even say for sure it'll be coming to Mountain View's
mobile OS, but there's no reason to assume it won't. The app
itself is pretty simple: one or more people are able to beam
photos from their iDevice to a Chromecast creating a collage of
memories. If you want, you can even doodle on your images before
putting them up for all to see. While you'll need the app to
actually send the Photowall to your TV, not everyone needs the
app to add photos to the collection. There's a simple web app
for uploading pics to share. Oh, and when you're done, you have
the option of exporting the montage to a YouTube clip for
passing around between friends. You can download Photowall for
Chromecast for free at the source link.  Update: Google says an
Android version of Photowall is coming today.  Update 2: Well,
would you look at that? There's a web version now, too.  Update
3: The Android app is now