Cowell, 52, said he thinks the BBC1 singing contest is the same as his ITV1 talent show, reported Sun online.
"That show puzzles me because it starts off and it's all about the voice. So my first thought is, 'Why isn't this on radio?' because what's the point in looking at them. Then suddenly I'm watching it a week or two weeks ago and it's the same as The X Factor. They've got dancers behind them, graphics, lights. Same show," he said.
Cowell also said that this is not the only show inspired by his televised ideas.
"I see a lot of shows trying to rip us off. If you try and rip somebody off it always looks like a bad copy. You've got to find a different way of doing things."