[kbartek]

You can use PowerDirector for editing on Android and PC, but I cannot say it is the best choice on PC... on Android I really recommend it, as it's an full-fledged editor, but on PC if you want a simple video editor you'll want Vegas Pro or Adobe Premiere, but as you want a free video editor, use HitFilm Express, a very powerful video editing tool with such things as motion tracking (!) that is absolutely free. (I've highlighted motion tracking as it is very useful for blurring moving objects.)