I have a similar app (<a href="http://pickmoto.com" rel="nofollow">http://pickmoto.com</a>) for iPhone and iPad. It's clear that we can't legally use the logos without a license. But of course the leagues aren't going to pay attention to indie developers until they are genuine threats. At that point, maybe you could afford to pay for the license or work something out.<p>We decided against risking it with logos because Apple could yank us at a moment's notice even if we made it into the Store. And considering that some of the best selling apps are developed by the Leagues, we imagine Apple would be pretty quick to act if the Leagues asked.<p>So instead, we're using pennants without logos. Not ideal, but safer.