But there is the chance that an app that ran just fine on the simulator will have glitches or just feel wrong on a real iPad. Many developers say they do not want to take that risk.
“As much as we’d love to be there on Day 1, a misstep could kill the train before it even gets out of the station,“ said Wade Slitkin, chief executive of Panelfly, which makes a digital comic-book reader for devices like the iPhone and has deals with publishers like Marvel and Sterling.
There are real-world factors that may go undetected with a simulator, like the weight of the device and how people hold it. To compensate, engineers have been printing out sample pages and pasting them onto magazines, “to get a feel for holding it in our hands,” said Stephen Lynch, chief technologist at the company.
Shervin Pishevar, founder of SGN, a mobile gaming company, tried to get a jump on the competition by attending the iPad’s unveiling in San Francisco in January, then spending every possible moment using one in a demonstration area. Mr. Pishevar said he believes that the large iPad screen will allow families to sit around the device and play turn-based Monopoly-type games.
His company is also developing games that players will operate by linking an iPhone or iPod Touch to the iPad over a wireless network and using the smaller device as a game controller — somewhat like the motion-sensitive remote for the Nintendo Wii.
“We are going to be able to build games and entertainment applications that are as good as a console-type game,” Mr. Pishevar said.
Among large media companies, The Journal, The Times, Timemagazine and NPR will have apps for the iPad available when it goes on sale, according to people briefed on those companies’ plans. Natalie Kerris, an Apple spokeswoman, declined to comment.
Most of the existing apps for the iPhone will run on the iPad as is, either stretched to fit the screen or in a smaller window. But many developers are focusing on revamping their most popular iPhone titles for use on the iPad.
Neil Young, co-founder and head of the iPhone gaming studio Ngmoco, said his company was updating several games, including a multiplayer game called Charadium where players draw items and take turns guessing what the picture is. It will get new controls and a roomier blank pad to draw on.
“There are so many more places to touch on the screen,” he said. “We can have a lot more fun with it.”