On Android: App settings > Jerboa > Set as default > Supported web addresses > check whatever you like
I checked my instance’s only, so whenever I click some link to a community in Jerboa it I will go directly to the community, instead of it opening in the browser.
Don’t think it will work very well with other instances, right now tho. At least not until link redirection is launched.
Used to do this on Sync for Reddit so that any Reddit results from Google I click on would open on the app instead of Reddit itself.