today we have a great android app "fxguru" that works like vfx editor on computer ,just like after effects .
you can acheive realistic result with this vfx editor "fxguru" , and its really to use .
and on top of its for free , you will just need a phone that support Android.
to use it , you need to lunch the fxguru app , then choose the effect that you want to apply to your videos , then you can record the video.
i'm sure that everyone will enjoy such a vfx editor app ,especially who tried after effects on desktop .
you can download fxguru from google playstore on your phone , or on desktop , and then transfer it .
post in comment what you've done with !
-you can check this overview about Fxguru :
Official website : http://www.fxguruapp.com/