You could have downloaded TinkerCell 0.0 for Mac from our software library for free. Our built-in antivirus scanned this Mac download and rated it as virus free. The application lies within Education Tools, more precisely Science.
From the developer:
TinkerCell is a software for synthetic biology. The visual interface allows users to design networks using various biological "parts". Models can include modules and multiple cells. Users can program new functions using C or Python. www.tinkercell.com
You may want to check out more Mac applications, such as PropCalc, Capacitor Lab or wandora-start, which might be similar to TinkerCell.