A:AnswerIt is Apple certified to work with any iPhone using a lightning connector, so yes it's compatible. It's about 3 feet long. Be careful if you order a longer/cheaper one. It may not be fully compatible -- it may charge, but not play music or videos.
A:AnswerIt isn't a ripoff. The ripoffs are the cables that are called charging cables or such. There are many brands out there that won't be fully functional.