Android: Powerdirector Pro. (I bought it before they went subscription only. Currently, not worth it IMHO.)
iOS: Lumafusion. (By far the best editor I've used, other than I currently use it on an iPhone SE which has a tiny screen.)
Windows/Linux: ShotCut, Olive Video Editor, Openshot, Kdenlive. (I had Powerdirector LE for a while, but quit using it.)