SUMZU iOS App needs a cool consumer marketing page

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This customer received 44 web designs from 7 designers. They chose this web design from Mannuel as the winning design.
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Web Design Brief
SUMZU is an iOS app for getting files onto your iOS device. We have an app in the Apple store and we're about to launch version 2. We have a strong theme already with characters appearing in the app (you can see screen shots on www.sumzu.com). The existing website is from a simple template - we want a site that shows off the app, steps people through what the app can do, and should look quirky, not corporate. We want to keep the existing icon/logo.
There's a matching iOS interface brief here: http://jobs.designcrowd.com/job.aspx?id=521403
Updates
Some additional information, this is a non-coding brief.
Added Wednesday, April 30, 2014
Thank you for some great designs so far. Can you also tell me how you think these pages would be presented. I'm not looking for code, but would these be parallax scrolled section for example? Using something like skrollr? If so, these sort of pages normally have quite big backgrounds, what would you suggest?
Added Saturday, May 03, 2014
Target Market(s)
Young, techno savvy consumers
Industry/Entity Type
Marketing
Font styles to use
Look and feel
Each slider illustrates characteristics of the customer's brand and the style your logo design should communicate.