I have had Phlomo for a few days now, it is a free app that turns your photos into "Lomo" style photos.
^Here is the menu, you can choose one of your photos to "Phlomo" or take a new photo. Then, you upload it to Flickr. So you have to have a Flickr account for this app to really work to your advantage. Because it doesn't save your photos unless you go to the settings to check "Yes" for "Save a copy of Phlomoized Photo" And even when you do that the photos come out with a low resolution.
The effects are nice, but with the low resolution and not being able to save how you would like to, I wouldn't recommend this app. Even though it is free, it's not really worth it.