Honestly though, I really do need to read more of his stuff. I've only read a few, but they're incredibly good.
F droid link: https://f-droid.org/packages/org.solovyev.android.calculator/
Source code link (taken from F droid): https://git.bubu1.eu/Bubu/android-calculatorpp
I've been on Calculator++ for ages now. The UI looks a bit different, but it seems like they do all the same things.
Tossing it out there as another option.
Additional suggestion: Cadence of Hyrule.
Real cool zelda flavored spin on crypt of the necrodancer, and it's a good bit more forgiving challenge wise.
@fishbone
@lemmy.dbzer0.com