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)

no ha sido portado oficialmente a dispositivos móviles de Apple ni Android. 2. Métodos Alternativos (Emulación)
Ve a y activa "Orígenes desconocidos" o "Instalar desde aplicaciones desconocidas" . no ha sido portado oficialmente a dispositivos móviles
que prometen el juego en un link directo de MediaFire o Mega sin mostrar el proceso de instalación real. que prometen el juego en un link directo
Sube el archivo APK a VirusTotal.com . Si más de 3 antivirus (de 60) lo detectan como malicioso, no lo instales . The official story regarding on Android is that
The official story regarding on Android is that it exists only as a native port exclusively for NVIDIA SHIELD TV . Despite many "APK + OBB" downloads found online, there is no official standalone version for standard Android smartphones or tablets. Current Ways to Play on Android
While the bar crawled across the screen, he cleared his phone’s cache and toggled the "Install from Unknown Sources" switch. It felt like opening a door in a dark basement.
Confirmed working on: El Capitan, Mavericks, Sierra, High Sierra, & Mojave
MANY reports that it DOES NOT work on Catalina. It is very unlikely that it will work under Catalina in the near future, as it would require some pretty hefty development on Wine (they're working on it). The only other option I see is for some nice macOS developer to take the original code (it's open source!) and re-write it to run natively on 64bit macOS (go ask any developer, this is a lot of work). Since Xcode is now free if you're running Catalina, I'm happy to give it a try... when I can afford to buy a system that can run Catalina :)
If you have questions or comments about using this application under OSX, please email them to ki4stu k4iz at arrl dot net.