Snapseed App on iPad

Masking feature for fireworks composite.
It has turned out that the Snapseed App on my iPad, is my go-to image processing application for my images that go online. Many may not be aware of the amazing features it contains - including masking ability.
With this set of fireworks images, I used Snapseed to composite 3 separate pics of fireworks, onto the black sky area of a street scene that I was shooting at the same time using a wide angle lens (11-22mm f2.8) and Live Composite mode.
This KZbin video shows the beginning to end of the process, including the use of masking - all accomplished in a few minutes in Snapseed, after wirelessly transferring the files to my iPad (Air2) from my Olympus E-M10