In order for you to play Parkitect on macOS with minimal graphics settings, your computer must meet the following requirements
Operating System:
Mac OS X 10.13+
Processor (CPU):
2.3 GHz Intel i3 or comparable
Memory (RAM):
4 GB RAM
Graphics Card:
Shader Model 3.0 capabilities (anything with a graphics driver that isn't older than ~2016 probably works)
Storage:
2 GB available space
In order to play Parkitect on macOS with maximum graphics settings, you need a computer with a configuration no worse than the following
Operating System:
Mac OS X 10.13+
Processor (CPU):
3.0 GHz Intel i5 or comparable
Memory (RAM):
6 GB RAM
Graphics Card:
Dedicated graphics card made after ~2015
Storage:
2 GB available space