Fotolr Photo Studio Pro HD 
is an picture processing app, powerful and easy to use. 
This software includes 22 features that are often used in image processing, and has almost all the photo editing functions and photo effects. 
No matter you are a professional or a novice, you can use this app to make some amazing picture effects in less than one minute. This app usually retails for $2.99/£1.99 but it is temporarily free. Click here to download.