Is there any online tool that I can use to check to see the percentage that Apple stock has risen from a specific date range such as August alone or say this year so far?
Click on the charts button at the top of this screen. On the left side find the 7th icon down, it has a "price range" tool.
Charting and mobile apps typically do not work well together. Detailed charting is best done on a desktop app. IMHO...