Easy yes. Should you check your current app installs to make sure they are "Mavericks compatible" first…absolutely.
You certainly don't want to do a free Mavericks OS upgrade…and then have to spend possibly hundreds of dollars to upgrade apps to get Mavericks compatibility (if you don't actually NEED Mavericks for any particular reason).
Well…we could use the same logic with Yosemite. Yosemite is newer than both Mountain Lion and Mavericks…so why not just upgrade all the way to the newest Mac OS??
Also by the way. Unless you downloaded Mavericks previously. Mavericks is not currently available.
But to answer your question more directly. I usually upgrade my OS if:
- It has features that I must have.
- I have hardware that requires the newer OS.
- I have software that requires the new OS.
- Somehow the performance of the things that I do will be enhanced with the newer OS.
If I have no logical reason to upgrade. Then I stick with what I got (why "fix" what ain't broken)?? If Mountain Lion is running smoothly for you…what happens if the upgrade to Mavericks (or Yosemite)…turns out to be a big headache??
Downgrading is usually not that easy.
This is just my way of doing it. Other folks like to "jump into the pool" with both feet!