What is the yellow filter in most spanish rap videos?

What is the yellow filter in most hispanic rap videos?

Is there an iPhone app with that filter?

Example: image
Video: http://vimeo.com/...m/63606494

Other video describing this more:
Picture if video can't be viewed: image

Thank you!

Added (1). Jim A, I'm asking if there's an equivalent of those for iPhone, not that these were filmed with an iPhone.
I tried searching for 'yellow lens' in the apps search bar but nothing… I'm looking for the name of those lens or process in order to find how to do it myself:-).

You can't possibly believe any of these were shot with a cheap, funky phone, can you? It's either a lens filter but probably done at the edit.

Just bump up your white balance to around 10, 000K. No filter is necessary.

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