When comparing MagicaVoxel vs Paint3D, the Slant community recommends MagicaVoxel for most people. In the question“What are the best voxel editors?” MagicaVoxel is ranked 1st while Paint3D is ranked 9th.
Ranked in these QuestionsQuestion Ranking
Pro Actively developed
MagicaVoxel is constantly being developed with new releases bringing bug fixes and new features being released on a constant basis.
Pro Has isometric view mode
Has an isometric view mode for people who are doing isometric drawings.
Pro Realtime render
The viewport renders the objects in real time. Changes made to lighting and materials (such as reflectivity, opacity, etc) are instantly shown on the screen with minimal to no delay. The renderer also allows adjusting things like FOV.
Pro Very easy to use
MagicaVoxel has sane defaults and an intuitive interface. You add or remove voxels with the left-click and rotate the camera with the right-click. The interface does not overwhelm or get in the way, yet it keeps all functionality within easy reach.
Very helpful for beginners is the fact that hovering with the mouse over a tool shows hints on how to use the tool. The hints can be found at the bottom of the interface.
Pro Keyboard shortcut cheat sheet is available
A list of all keyboard shortcuts organized by category is available on the website.
Pro Great workflow
Bake possibility, easy to create a custom palette. Not even in version 1.0 and it's already great.
Pro Excellent rendering mode
Pro Imports and exports as .obj
Has a free trial version and a cheap full version.
Pro Scripting support
Can be used to generate models, import stuff, animate, etc.
Pro Can export traditional 3D models
Pro Interoperates with 2D paint programs
Pro Supports multiple voxel formats
Pro Easy to use
Pro Uses 32-bit color with real volumetric transparency
Pro Supports both "per voxel" drawing and smooth "sculpting"
Con Small sizes
The maximum dimensions for one voxel is 126 x 126 x 126. To put this into perspective, the kvx format (an older format by ken silverman used in games like blood, shadow warrior, and ZDooM-based ports) has maximum dimensions of 256x256x255. while newer versions of magicavoxel include a world editor (in which multiple voxels can be arranged into a set), each voxel is exported separately.
Con Does not support intelligent palette merging when importing a model as a brush
Con Bad model mesh exporting
For video game development, it's needed to rearrange some of the vertices, builds triangles per color, instead of one big mesh. It's tedious to solve but gives overall nice results.
Con Unsuitable for game-dev
Only usable format is poorly supported .obj; besides that, the exported models have vertices for each color on, making the vertex count very high and FPS of final game very low.
Con No Linux
Works only on Mac OS and Windows.
Con The web site's domain is no longer available
Using the WayBackMachine to get the site's contact email address, I attempted to contact the developer to find out what the story is. There has been no response. The WayBackMachine's last archive date for the site was 11Jan2016. Their cached version of the paint3D.net's forum does not have any post explaining what happened.