Yes. MathMagic Personal / Lite v8.2 or newer runs on Mac OS X 10.9 Mavericks.
MathMagic Pro v8.7 or newer and its bundled new MathMagic Plug-ins are compatible with Mavericks. (MathMagic Pro v8.6x or older versions do not work on Mavericks as the OpenTransport based communication service is not available on Mavericks any more.)
However, “The app is damaged and can’t be opened …” or similar message may be displayed when launching your MathMagic application depending on the version you downloaded.
If this is the case, please try one of the following options to make it run. This is caused by Gatekeeper security feature included in Mac OS X 10.8 or newer.