4D Draw

4D Draw is a specialized vector-graphics utility designed for geometry students to visualize four-dimensional space. Developed by Jeff Weeks, the app employs a unique color-mapping system where the first three coordinates are rendered spatially and the fourth is represented via the color spectrum. Unlike general-purpose geometry tools, 4D Draw is a focused sandbox for manual construction and spatial reasoning. The app is positioned as a high-utility, zero-cost educational tool, distributed as open-source freeware under the GNU General Public License. It explicitly targets an academic audience, directing "recreational" users toward other products like 4D Maze or Torus Games. This clear segmentation ensures the tool remains a functional utility for mathematical exploration rather than a gamified experience. With a niche focus on 4D construction, the app differentiates itself from dominant educational standards like GeoGebra by providing specific tools for high-dimensional visualization that are often absent in broader 2D/3D platforms. However, its current 3.28-star rating and reliance on manual point manipulation suggest opportunities for UX refinement to match the accessibility of modern contenders.