App info is currently processing and/or the app is not yet fully available for sale on the US App Store.
Maybe the price is high but it's difficult to browse the internet in case you need immediate help or solution.
The problem with this is that it's usually more effective to give cops a little leeway; once you start getting smart with fancy answers a cop will feel intellectually threatened. Once you've pissed him off, there is a lot of gray area where the cop can escalate things, and you can't defend yourself until you get to court, which is too costly for most of us. Eg. A cop approaches you sitting in your car and asks you what you're doing, if you answer with cocky lawyer-esque retort he can just say he smells weed and arrest you, search your car, and find your stash. You can argue that the search incident to arrest was unlawful because the arrest was based on smell (which in Canada the Supreme Court has said is not good enough). You'll be arguing that in court at a cost of $5K.
Don't say "No" to the police. In fact, it's best not to say ANYTHING at all. This video may in fact change your life (for the better). http://www.davehitt.com/blog2/never-talk-to-the-police/ Note: This is mostly based on US laws, many of which are different from state to state. I think the app is a good idea.
the app really taught me a lot about my rights and what the cops can do and cant do. I never knew that teachers had a right to search our lockers. I also didnt know I could get a dui while riding my bike