Locus Maps Pro with microG/without Gapps?

Hello,

I was running Cyanogen Mod on my phone before and had to install GApps to get the Pro Version. I recently migrated to LineageOS, and now use microG and Yalp/Aurora as an alternative, as having GApps on the phone is really a pain in the a..e, and I really do prefer a GApps-free phone.

Now, when I was running the former setup I figured that I don't need the pro features, so would be fine with the standard app. However, the advert is a bit bothersome and I would be more than happy to purchase the app nonetheless to support it.

Long story short: is there a way to purchase the app through Yalp/microG or by any other means AVOIDING having to install GAPPS in order to get it? Thanks!