Promomatic - Easily create beautiful app store assets
Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
AppLaunchpad - Create free beautiful screenshots for App store/Google play
Meme Generator Pro - Meme Generator Pro is a free to use mobile application that offers all the advanced features and services or those who want to enjoy memes.
Screenshot Designer - Create engaging App Store screenshots
Picmaker - Design the Future