My preference is for an app that works fine without an internet connection and that has a relatively small package size.
If the features are good, some of us will talk about the app when posting about in-progress art or in advice topics wherever else we are. Keep on making announcements / devlogs when you release the app and any new features or fixes so we know what’s available.
Also, I suggest you set up a Librepay account for artists who prefer to pay for programs they use. This suggestion is assuming money going in your direction doesn’t cause trouble. If any amount of online income would be a problem, then maybe choose a charity to mention. That might reassure people who are wary of free stuff from someone they don’t know. (I love free apps, especially because I depend on them, but I know not everyone does.)