Thanks. I'm happy to share that iCloud sync and MacOS app is something that already in the plan for future development. In the meantime, if you have an M-series Mac, you should be able to run the app directly on your Mac since I've enabled Mac Catalyst support.
Just a heads up from someone who's gone down iCloud sync path before. Make sure you're aware of the tradeoffs before relying on it for your app. It has a lot of downsides that aren't immediately obvious due to it relying on the user's iCloud storage quota. Many user's don't understand this and will leave 1 star reviews etc.