Since its release, the Chromecast never supported photo sharing to your TV. That changes today with Photowall for Android and iOS.
With Photowall, you can share photos from your phone on your television. You can even doodle on top of them to create funny photos.
Photowall even allows your friends to contribute to your Photowall using a web app to upload pics. Only one person needs the Photowall app to establish a connection with a Chromecast.
Once you and your friends are done adding your photos to Photowall, a YouTube video will automatically be generated for you to share. This is similar to the Auto Awesome feature of Google+.
Google classifies Photowall as an “Chrome experiment” so expect some bugs. Looking at the mediocre reviews for the app, there are plenty of bugs for Google to sort out.