Here is my dice roller for 40k. I'm an old guy stuck in 3rd edition so I hope this still applies to folks using the game today. It has a nice ability to filter out dice. Say for instance that you want to roll 32 die to hit. Say it's ballistic 3 so filter out the 1's and 2's. Then roll the remaining die for wounds, etc. It's not a do all program, but should be fun for simple things or for tossing up to 40 dice, or 80 if you use both die windows.
Short and quick description as I'm uploading super fast for a reddit post/response.