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)

Nannaku Prematho is a timeless Telugu film that explores the complexities of love, relationships, and family values. The film's engaging story, memorable characters, and soulful music make it a must-watch for fans of Telugu cinema. With its positive themes and entertaining plot, Nannaku Prematho is a film that will continue to delight audiences for years to come.
Allu Arjun delivers a stellar performance in the film, showcasing his signature style and charm. Anu Emmanuel, in her debut role, impresses with her natural acting and stunning looks. Vishnu Manchu plays a supporting role, and his chemistry with Allu Arjun is excellent. nannaku prematho
Nannaku Prematho is a 2016 Telugu film directed by Trinadha Rao Nakkina and produced by Sai Korrapati under the banner of 24 Frames Factory. The film stars Allu Arjun, Anu Emmanuel, and Vishnu Manchu in the lead roles. The movie is a romantic comedy-drama that revolves around the life of a young man, Vinod (played by Allu Arjun), who falls in love with a college student, Spoorthy (played by Anu Emmanuel). The film received positive reviews from critics and audiences alike, and it was a commercial success. Nannaku Prematho is a timeless Telugu film that
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.