Which is Best app for beginners stock investor?

Umm. I myself am a newbie stock investor; so I can give the details of how I trade. Most of the days I don't do intraday (Buy and sell in a single day). I tried and lost some money (Thank god it was not much..!!) So I do short terms now. And I mainly use Angel Broking, Groww, and Paytm. And I invest in Mutual funds too. I use the Groww application for that. And for instant money (if it's month-end I won't be having much in my bank accounts) I borrow from the fintech companies like Stashfin. I usually take small sums, like ₹10,000 and ₹20,000 and once I get my salary I repay them; so there won't be much-accumulated interest on the amount borrowed. You can try this method. And I must say start small, don't invest too much without having proper knowledge, and as a fellow investor, I have experienced losses and gains equally, it's not easy. So start investing small. And learn a thing or two before jumping into it.