It looks that one can view live TV on Pik app on iPad/tablet also. Would that count towards data usage if I am in the home?
According to this article, yes, you consume your data allotment if not using the Pik TV device.
The name "Pik TV" and "app" can be confusing depending on the device you are using it on..... here's how I think it works...
The following WILL count to your home data consumption
The following will NOT count to your data consumption