You have your choice of three versions of Pinewood Master.

Intel Cocoa - Works on Catalina(Sierra, Yosemite,Mavericks,SL, L, and ML)

Intel Carbon - Works on Snow Leopard, Lion, and Mountain Lion

Power PC - Works on older G3 and G4 Macs

Download Pinewood Derby 1.34

Use this version for Macintosh computers running Snow Leopard (OSX 10.6.x) , Lion (OSX 10.7.x), or Mountain Lion (OSX 10.8.x)

Download Version 1.28

Use this version for use on older G3 and G4 Macintosh computers


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Download the Demo and try it out for FREE.  Then buy a license ($25) to convert the Demo into the FULL version.