For those who think web-based IDEs are inefficient, I recommend giving VS Code in the browser a try: nowadays it's just as performant as it is on the desktop. Even on the iPad it's just as performant (with 120Hz scrolling!), although as noted in the announcement, the file system limitations make it a bit of a pain to work with for ad hoc coding.
That's on Apple, because they only allow Safari (or reskinned variants of Safari) on iOS.