What ballistics calculator are you serious shooters using?

[archerforkids]

You're supposed to be able to download the Strelok app via Huawei app gallery. The catch is you have to do it on a VPN and fib about what country you're in. I'm not advocating right or wrong doing this given this is a Chinese app gallery. My understanding is that app gallery is blocked if you're from good Ole USA. One of yiu fine gents with more knowledge on the subject might chime in.
Strelok has an active page on Facebook. He's really good about responding to new questions.

 

[old_heli_logger]

Shooter...best $10 I ever spent

 

[JaoeyP]

If you're REALLY serious about hitting those long range targets, a Kestrel with Applied Ballistics is the way to go. The calculators that are app based are good and can be used to good effect, but only the Kestrel can give you real time atmospheric info at your exact location. Pair that with top notch ballistics software and the ability to get a wind reading and corresponding calculation and you have the best current solver.