I was under the impression that browser based IDE won’t work on iOS because safari (or maybe UIkit) doesn’t support some type of controls.
I can’t find the mention but I read that here at HN not long ago
https://bugs.chromium.org/p/chromium/issues/detail?id=118639
"it's a discussion we've had internally many times. The Android Keyboard team, however, has decided that key-codes are not the way to go... and I cannot say they are wrong.
While there are certain advantages to key-codes, they are also very limiting. They get in the way of auto-correct, auto-suggest, swiping, voice dictation, and many others. There are many possible capabilities of a soft "input method" that do not fit the paradigm of key codes."