No, Kite Connect does not restrict you to one app per Client ID. You can create multiple paid Connect apps; however, each app requires a separate subscription of ₹500 per month.
Since you have already used ₹500 to activate your first app, you will need an additional ₹500 in available Developer Credits to subscribe to a second app.
Since you have already used ₹500 to activate your first app, you will need an additional ₹500 in available Developer Credits to subscribe to a second app.