Atthis 1.1 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This free software for Mac OS X is an intellectual property of GuoshengChen Inc. Atthis for Mac lies within Design & Photo Tools, more precisely Viewers & Editors. 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.
From the developer:
Atthis is a all in one mobile development toolbox.
You may want to check out more Mac applications, such as Vectorworks 2010 Viewer, RealCADD or Polaris, which might be similar to Atthis.