Though modern "emoji pickers" have extended the range of IME and soft keyboard tools that regular users use (often daily). I've been joking that the next APL is probably made from emoji, but it's not entirely a joke: the Windows emoji keyboard (Win+. or Win+;) has a pretty full Unicode math symbol section (click the Omega top-level tab and then flip through the bottom level tabs), and while it is missing some of the nice search features of the more colorful emoji, gives relatively quick access to a lot of options.