StockCharts

The screenshots preview look promising. However after the download complete this app will not start. It just spins and spins.

This has bug. It does not launch the app properly and it is very sluggish

I've been using Stockcharts since day one. It's been invaluable. Don't ever buy a stock without looking at the stock's chart! Stockcharts not only has beautiful charts and charting tools, their education and assistance is way beyond anything out the seminars are free as well as many valuable tools.