Upstox Account Opening
Flat Brokerage: ₹20/order for Intraday, Delivery and F&O| ₹0 Account Opening charges| Zero Commissions on Mutual Funds
No, custom indicators are not allowed.
But they have over 150+ indicators. These indicators are configurable. This means you could set the parameters as per your choice.
The list of 150+ indicators covers mostly all of them needed by a trader.