One of Apple's (NASDAQ:AAPL) huge competitive advantages is its ecosystem. Thousands of independent software and hardware developers are working hard every day to make great products for iOS devices -- all of which make your phone and tablet (and Apple stock) ever more valuable to you.

Today, Motley Fool analyst Rex Moore reviews one of those products: The LensMag kit from Carson, which acts as a macro lens for your iPhone 5 camera.

Rex Moore has no position in any stocks mentioned. The Motley Fool recommends Apple. The Motley Fool owns shares of Apple. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.