Apple co-founder Steve Wozniak has delivered some seemingly blasphemous opinions on two of Apple's most exciting and cash-generating products -- the iPod and the iPhone.

In an interview this week with U.K. newspaper The Telegraph, Wozniak indicated he believes the iPod's days are numbered. "The iPod has sort of lived a long life at number one," he said. "Things like, that if you look back to transistor radios and Walkmans, they kind of die out after a while."

"It's kind of like everyone has got one or two or three," he continued. "You get to a point when they are on display everywhere, they get real cheap and they are not selling as much."

Wozniak, who was the technical genius complement to the marketing genius of Apple co-founder Steve Jobs, has remained consistently supportive of computing developments that favor open technology whether for application developers in general or for opening up and unlocking the iPhone in particular.

In the interview he compared the open approach of Google's Android phone and wished out loud that he could write open applications software for the iPhone.

"Consumers aren't getting all they want when companies are very proprietary and lock their products down," he said. "I would like to write some more powerful apps than what you're allowed."

Wozniak also indicated he felt the recent swoon in Apple stock price didn't surprise him and the downgrade in the firm by stock analysts was "correct." He said: "It is time for the whole computer industry to maybe have a bit of a slowdown. For 20 years we have been in this replacement and upgrade market."

Asked about Apple's future, Wozniak was discrete. However, he did take note of a possible "iWatch."