Hornady 4DOF works and is free. I use that one in my classes for that reason. It's slightly clunky, but gives good data. Applied Ballistics Quantum is pretty legit. The "good" version was free to me because I have a Kestrel with AB, and there might be some cost if you don't have one of those. It would be my first choice if you aren't going to a dedicated Kestrel meter with AB installed. Ballistic AE is my old standby. I know it the best of all of them, and use it regularly for a sanity check