Here are 12 graphic design software apps for iPhones: 1: Procreate: A painting and drawing app for iPad with advanced features for digital artists and illustrators. 2: Adobe Photoshop: A mobile version of Photoshop with many advanced features, including layer editing, color correction, and retouching tools. 3: Adobe Illustrator: A vector-based design app with tools for creating illustrations, logos, and graphics. 4: Affinity Designer: A powerful vector-based design app with many features similar to Adobe Illustrator. 5: CorelDRAW: A vector-based design app with advanced features for creating illustrations, logos, and graphics. 6: Sketch: A digital design app with tools for creating user interfaces, icons, and graphics. 7: Assembly: A vector-based design app with customizable shapes and icons for creating logos and graphics. 8: Graphic: A vector-based design app with tools for creating illustrations, logos, and graphics. 9: Concepts: A digital design and sketching app with customizable brushes and tools for creating illustrations and graphics. 10: Vectornator: A vector-based design app with tools for creating illustrations, logos, and graphics with support for iCloud syncing and cross-platform compatibility.