Post Scriptum is a WW2 game / mil-sim that is scheduled for release soon(tm). In it, amongst other things, you can set up and fire Mortars to cover advances behind a smoke screen or pound the enemy with High-Explosives.
However, this is a bit of a hit and miss in-game, as you have to guesstimate range and bearing. The calculator I made, will eliminate the guesswork, and provide accurate fire-missions from shot one.
The app is available
at the play-store now.
It's free, no ads, no permissions needed or asked for.
(from playstore)
Will work equally well on narrow phone-screens as more chunky tablet screens.
More at my blog.
Source Code (sans media files)
