I've weaned myself off a physical calculator with Insect ( https://insect.sh/ ) with the webpage stored on my computer but it's still slow to launch and slow to enter things. The main advantage over a physical one for me is copying and pasting to other programs which I do a lot of. The main downside is not enough precision, so I go for Windows calculator when I need more digits. I just wish it was actually high precision like it claims to be :(