I am not fan of emulators, but between not having a feature and having it emulated, also emulators are fine.
There is little to do, the 'continous memory' of calculators is pretty handy more often than not for some calculators. The point is to have a math environment without the need to open excel or other programming languages (that are surely powerful, but they do not have memory between sessions unless I click 'save' or I code persistency. I would like to, well, keeping the comfort zone having a calculator for mac.
I tried to search something but I was not that lucky.