Is Fyers a legit app or is it trustable source. Because it offers better brokrage than zerodha,upstox and groww. Having doubt because never heard about the app prior than bekifaayati wali didi's video which she uploded 7 months prior so I was curious about the same as it is SEBI Registered as well. If Somebody uses the app or used it so please tell what all are the hidden charges in it if any idea.