What's a good editing app for free

I have an iPhone and want to start youtube videos i want to know a good video editing app to were i can take pieces out and put more pieces in it has to be free tho

Try Splice, many people dislike it because they find it confusing… But if you figure out how to use it, i'm surprised its free. You can slow down clips, add pictures, cut clips, add your own music into certain sections of the clip or pictures, and it even has transitions.

Search "Video Editor FREE" (Search it JUST like I typed it!
Hope this helps!