Downloading ScreenNinja 2.0.1 for Mac from the developer's website was possible when we last checked. We cannot confirm if there is a free download of this app available.
Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe. This software for Mac OS X was originally created by Improbablesciences. ScreenNinja for Mac lies within Design & Photo Tools, more precisely Screen Capture.
From the developer:
ScreenNinja is a different kind of screen recording program. It records things that would be too long or boring to watch in real time, but when viewed as a time-lapse video can be interesting or beautiful. You've probably seen a time-lapse video of a building, concert or conference hall being set up. Imagine what it would look like to see the process of building your next app, website or work of art sped up in a similar style.
You may want to check out more software for Mac, such as iGrabIt, AEJEE or GrabberWindow, which might be related to ScreenNinja.