Once you have → downloaded RealFlow 10, extract the archive, and open the disk image:
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Drag the "RealFlow 10" icon onto the "Applications" link to install the program.
Go to the "Applications" directory of your computer, search for "RealFlow 10" and , attach the application to your dock, or open it directly.
When you start the application you will be asked to → license your copy of RealFlow 10.