I tried for a number of weeks to get a definitive answer to this question. Unfortunately, the only answer I can give you is that we (Oracle) are not allowed to interpret the license.
You'll find the license agreement for APEX on the download page at http://www.oracle.com/technetwork/developer-tools/apex/downloads/index.html. I'm sorry that I don't have a more meaningful answer for you.
Thanks for taking time to answer this question. I had a feeling it would be tricky :-)
It is very hard to read out of the general license agreement whether this is OK or not.
Perhaps the future will bring some clarification.
i think that means that , there is no word untill now says that it is prohibited ?