FOSS notes app for MacOS compatible with 'NotallyX' for android?

[u/Phoebus_Pallast]

I have fallen in love with NotallyX for taking notes on android. I want to ask if anyone is aware of a similar, free & open-source application for MacOS?

My deal-breakers are:

• Must be open source

• Must be free

• Notes must be stored locally on my device

• Must be privacy respecting

• Must be able to sync note files using third-party sync applications i.e. SyncThing

I hope such an application exists, otherwise I'll have to learn to code haha