This app was mentioned in 2 comments, with an average of 1.00 upvote
App Store: https://itunes.apple.com/us/app/window-shots/id1072518459?ls=1&mt=8
Play Store: https://play.google.com/store/apps/details?id=me.onuryilmaz.app.windowshots
Being the developer of this application, you can send every comment, bug or request about the application directly to me.
In additon, application is completely free and your Reddit data is not kept within the application.
Android version of the app is also available: https://play.google.com/store/apps/details?id=me.onuryilmaz.app.windowshots