Currently the best math editor for google docs, and I've tried quite a few. has handled basically everything I've needed for engineering for about a year. The shortcuts are a lifesaver, especially on greek letters. I would absolutely reccomend it to anyone who has to type any sort of math who doesn't want to bother learning LaTeX.
My only critiques are absolutely tiny. Adding a way to cancel variables without the arrowhead and textbox would be nice, because the arrow doesn't make sense for cancelling similar variables on fractions. Also, I enjoy the nice units, but adding more or allowing the ability to type text that looks like the units would be nice. For example, if I do a problem with force, I can't have the final variable of Newtons look like the rest of the units in the problem. Speaking of units, having a way of writing seconds as "s" in the unit format rather than "sec" would be nice, so I can follow general standards on things like m/(s^2).
These critiques are very small and insignificant, and all have workarounds with other functions. I would absolutely recommend this for anyone typing any amount of math.