All told, some 1.36 million people access the service from UPC Polska.
According to the operator, Horizon offers customers 178 HD channels, while Replay TV gives seven-day catch-up access to 92 TV channels.
Meanwhile, Horizon Go gives access to 115 TV channels simultaneously on up to three devices at home.
Outside the home, viewers can receive 94 TV channels on Horizon Go on a mobile device.
Horizon made its debut in Poland three years ago.