Been using RealCalc Plus for a couple months now. It’s basically a super detailed scientific calculator app that looks and feels just like a real handheld calculator. Pretty solid if you’re into that kind of thing.
Here’s what you can do – there’s all the standard scientific functions like trig and logs, but it also does fractions, degrees/minutes/seconds, unit conversions, and even binary/hex/octal calculations. And it’s got a history log and memory slots too. Took me a while to figure out all the features but the help docs are pretty good.
Look, if you need a powerful calculator for work or school, you’ll probably dig this. It’s not perfect – the ads can get a little annoying if you don’t pay – but overall it does the job really well. Worth checking out.