This product is very good for editing videos shot with an iPhone. It can combine up to six video clips which are viewed simultaneously (in multi-camera mode). It has many other features for professional-looking results. These include overlays, transitions, time-lapse, green-screen, subtitles, titles, voice-overs, stills, music, even motion following and reduced camera shake.

The only possible effect I have found missing is the ability to move or zoom an overlay and this might be possible but I just haven't discovered and don't need it.

They have very helpful instructional videos to show you how to do most things.

I have had problems with it crashing and have requested tech support who respond in under 24 hours.