I researched this myself a small bit.

It used to be called Twitter blueprint.
Developed by Twitter

From what I can tell tapatalk was developed only for mobile themes.

Where bootstrap is more of a web site/apps deployment framework.
Meaning it is a glorified style editor which can be used to deploy mobile themes as well as normal ones, and other apps.

Now which is more time intensive to deploy???

Blue Man Group
There is no such thing as stupid questions. Just stupid answers