Link Software

This slightly gimmicky special effects app is nonetheless very clever, verging on useful. It comes with a batch of free effects (the kind of things you'd see in a disaster movie) with additional packs as in-app purchases.
You point your phone or tablet at a scene (say, your office, the street or your garden), and then the app records a short video clip with a destructive missile attack or perhaps a hovering UFO superimposed over the live action. Motion tracking allows you to pan as you film, too.
Download FxGuru: Movie FX Director here
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