Pepakura Designer 6.0.6 Here

One of the biggest complaints about older versions (4.x and early 5.x) was the tiny, pixelated UI on modern 4K monitors. Version 6.0.6 natively supports high-DPI scaling. Icons, menus, and the 3D viewport now scale correctly, reducing eye strain during long unfolding sessions.

Pepakura Designer 6.0.6 supports: