I suppose WLD has more tools then WLP?
Thanks
William Zhu

What's the difference between Wealth-Lab Developer and Wealth-Lab Pro Version 6?

Wealth-Lab Developer is sold outside of the U.S. by MS123, LLC under license by Fidelity Investments. Wealth-Lab Pro, the U.S. version, is available to qualified active trader accounts at Fidelity free of charge. "Pro" and "Developer" are in effect the same application except that "Pro" is delivered with special integration for Fidelity price and fundamental data as well as for automated trading with Fidelity Investments.

If you live outside the U.S. and want to take a 30-day trial of WL Developer, click the big "Download Now" button on the home page.

If you are a U.S. resident, try Wealth-Lab Pro instead. (Scroll about half way down for the download link.)