From this page, you can find out how to download any of the applications
that comes with matterial: the matterial Compositor,
mFlip (the matterial Flip Book), and matterial Junior.
First, be warned... the current version is not meant for the
public. You can get the latest release (and other releases)
(The above version is very outdated, and a totally new version is coming soon.)
The latest and newest released version of mFlip is version 0.3.0.
You can get download it with the link below.
mFlip version 0.3.0
matterial Junior is not yet available for download.