Hi, I am on linux so I can't use the app, but I managed to work out how to the same data using URLS that the app uses;
http://www.google.co.uk/finance/getprices?q=.NSEI&x=NSE&i=60&p=3d&f=d,o,h,l,c,v&df=cpct&auto=1
so that is a really cool little app.
Thanks,
T