I have a demat account with Ventura from last 2 years approx. I am a very satisfied customer of ventura as the services provided by them are really very good.
I had opened my account for free and by paying 10000 as a deposit fee which is refundable(more you trade, more will be brokerage, and more will you get back from the deposited money) and at a mere brokerage rate 0.01
Their software "pointer" is really very good one and it is available for both laptop and mobile.
I am doing trading on my mobile and never had any problem with the software.
The only thing I dislike about ventura is that their numbers are always busy(though they have more than 3-4 numbers working at the same time), and if you rely on trading BY calling them, then, u will have a bad experience with ventura for sure.
otherwise it is the best trading company on which u can bet easily.