iPhone Apps to Drawing 2D

ibis Paint X is a popular and versatile drawing and painting application designed for mobile platforms, offering a robust suite of tools for digital artists. It boasts a massive library of brushes, filters, blending modes, and supports layers, pen pressure, and recording timelapses.

LibGDX is a robust, free, and open-source Java game development framework designed for creating 2D and 3D games across multiple platforms including Windows, macOS, Linux, Android, and web browsers.

Simple DirectMedia Layer (SDL) is a cross-platform, open-source development library offering low-level access to essential hardware like audio, input devices, and graphics APIs (OpenGL, Direct3D). It's a fundamental layer for game development and creating interactive applications.

Autodesk SketchBook is a powerful yet intuitive digital drawing and painting application designed for artists, designers, and creative professionals. It offers a comprehensive suite of tools to create stunning artwork on various platforms, focusing on a natural drawing experience.

Autodesk AutoCAD is a powerful commercial computer-aided design (CAD) and drafting software used by professionals across architecture, engineering, construction, and manufacturing industries. It provides robust tools for 2D drafting, 3D modeling, and design documentation.