Quiver 3D Augmented Reality coloring apps: print, color and see your drawing in beautifully hand-animated 3D worlds. Developed by HappenApps, Inc.
License: Commercial
CherryTree is a free, open-source note-taking application focused on hierarchical organization and rich text editing, making it ideal for structured note-taking. Quiver, on the other hand, caters to programmers and technical users with its Markdown support and rich media capabilities, but it requires a paid license and may have a steeper learning curve.