What app can i use to edit pictures?

I have an iphone and i always see people edit their pictures with the galaxy effects like holding it between their hands, smoking smoke out, cool font edits and tiger heads. Lets just say they have DOPE and illest edit. Do anyone know any free app? Don't tell me photoshop.

Adobe Photoshop has an app its like 10bucks

Camera 360, pic collage, and colorblast.