What are some alternatives?
When comparing Akira and Icons8 Lunacy, you can also consider the following products
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Sketch - Professional digital design for Mac.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Figma - Team-based interface design, Figma lets you collaborate on designs in real time.
Adobe Illustrator - Adobe Illustrator is a vector graphics editor.
Alva - A radically new digital design tool built for cross-functional product teams