John Gruber of Daring Fireball has an interesting story about the absence of certain iPhone apps -- Stocks, Calculator, Clock, Weather, Voice Memos -- on the iPad.
It seems that these apps, when scaled up to iPad's bigger screen, simply didn't look good enough to Steve Jobs, so he decided to scrap them. Gruber writes:
"Ends up that just blowing up iPhone apps to fill the iPad screen looks and feels weird, even if you use higher-resolution graphics so that nothing looks pixelated. So they were scrapped by you-know-who. Perhaps they’ll appear on the iPad in some re-imagined form this summer with OS 4.0, but when the iPad ships next month, there won’t be versions of these apps."