I bought this product to play the game Draw Something on my iPhone 4S to draw finer and better, and that's the cat! The screen does not recognize many pens, or 1 out of 3 times, I have to support super strong, the tips are sinking and it's even worse ... Meanwhile, for the price, I would not have expected miracles ... In short, I'll buy a slightly more expensive pen, and meanwhile, I'll reuse my fingers! Too bad!