Grind is usually not fun but it is something I wouldn't mind if its done right, like grind to unlock less crazy stuff. Grind to progress usually is not fun. I expect developer's to make fun content in games without tedious stuff like certain grind elements.
PC is very advanced to play basic games that can easily work on android. For e.g. Running VN on PC makes no sense if all u do is click click to turn pages with mouse. So if game has basic control that can easily work using touch, u don't need to run it PC.