This is not just a shell but an operating system including package manager in your pocket. I have access to ping, dig, ssh, vim, python - in a terminal. Each of these could be different apps but I have them all right here. Gestures are well thought out, everything integrated works mostly seamlessly. Using it from iPad to login remotely to my servers, using it from iPhone to check stuff while on the way. And there’s python in it, which I often use as a more sophisticated calculator. Besides the fact that there is no calculator in iPad, sigh. Here I have variables, functions, power operator, parentheses. And I am sure I haven’t discovered everything that a-shell offers yet.