Unlike the iPhone 3GS, the iPad doesn't have built-in stocks, weather, voice memo, clock, calculator, or compass apps. It does, however, have the brand new iPad App Store, and yeah... there are apps for all that!

Check out our picks after the break!

Bloomberg for iPad [Free - iTunes link] offers not just stocks but news, company info, price charts, trends, analysis and... you get the idea. It could just be information overload on a 9.7" screen, but that's likely just what you stockies want!

Bloomberg for iPad

Weather Channel Max [Free - iTunes link] costs nothing (thanks to Toyota) but packs in the weathery-goodness. Full screen, customizable maps, in-motion radar, local, regional, and national video, and more make it not so much of a replacement as a escalation.

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Voice memos for iPad [Free - iTunes link] is the "I can't believe it's not butter" of replacement apps. It looks similar to Apple's iPhone Voice Memo app, but it's scaled up to iPad size. Unlimited recording, tagging, pause, levels, timer, and email options make it a great fill in option.

Voice memo for iPad

Clock... We haven't found a good replacement for Clock yet. If you know of one that matches the functionality and the grace of the iPhone Clock app, let us know in the comments. And developers -- make a good one, with a great icon. Seriously.

PCalc Lite [Free - iTunes] or PCalc [$9.99 - iTunes link] make the iPhone calculator look anemic by comparison. It includes an optional RPN mode, multiple undo and redo, unit conversions and constants, a couple of themes, and much more in the paid version.

PCalc for iPad

Compass HD + Vector Magnetometer / Gravitometer [Free for now - iTunes link] is an app that, frankly, we may not be smart enough to properly describe. It has absolute mode, north mode, declination mode, and relative modes, and a bunch of different display modes for acceleration visualization. Get it while it's free!

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So there you have it, App Store to the rescue! Did we miss any (other than clocks!)? Are there alternatives your like better? Let us know in the comments!