Dragon Shout app seems okay - and it's free too. That's the risk you run when you try to piggy-back on somebody else's IP though. They might not like it, no matter how benevolent or innocent you are. It's theirs. That's the thing with "intellectual property". It's a big private bag of tricks and you are not invited to play with it unless you do so in the prescribed manner. That is what copyright and patent laws have left us with - a culture defined by the products we buy instead of the stuff we make.