Newspaper editorial cartoonists have jumped into the world of iPhone applications as much as anyone, with Apple launching apps for cartoonists from The Denver Post to The Salt Lake Tribune.

But veteran cartoonist Daryl Cagle, who blogs at Political Cartoonists Index, says Apple rejected his request for an app for drawings about Tiger Woods, even after approving one for President Obama cartoons.

“As newspaper audiences decline, more readers have moved to the Web and now to mobile devices for news and opinion,” Cagle writes. “The iPhone dominates the audience that consumes news on their phones, and the new iPad is designed to grab even more print readers, perhaps replacing print. Editorial cartoonists, who are moving from print and the web to mobile devices, are finding that Apple's views of their profession can have a profound impact on what their future audience will be.”