Morse Runner is a Windows-based contest simulator developed by Alex Shovkoplyas, VE3NEA. Using Wineskin, it has been successfully and seamlessly run under OSX, and made available here for download. Sure, you could use Wineskin to do this yourself (and save me some bandwidth), or you can pull the ready-made dmg from here.
Running Catalina? Go to 'Download' to read the latest (and grab a box of tissues)

This is the heart of the software. It uses advanced algorithms (like MaxRects) to arrange images on a canvas as tightly as possible. Unlike a human dragging images in Photoshop, Texture Packer rotates images, removes transparency, and arranges them in a Tetris-like fashion to minimize wasted space. This results in smaller file sizes and better memory usage (VRAM).
Every time your game draws a texture, it makes a "draw call" to the GPU. Drawing 50 small textures requires 50 calls; drawing one large texture containing all 50 sprites requires only one, significantly boosting performance.
This is the heart of the software. It uses advanced algorithms (like MaxRects) to arrange images on a canvas as tightly as possible. Unlike a human dragging images in Photoshop, Texture Packer rotates images, removes transparency, and arranges them in a Tetris-like fashion to minimize wasted space. This results in smaller file sizes and better memory usage (VRAM).
Every time your game draws a texture, it makes a "draw call" to the GPU. Drawing 50 small textures requires 50 calls; drawing one large texture containing all 50 sprites requires only one, significantly boosting performance. texture packer pro
If you have questions or comments about using this application under OSX, please email them to ki4stu k4iz at arrl dot net.