Just played with it and it's actually something I've been looking for recently! I've been searching for direct flights out of Seattle to Europe, and so route map really hits the mark. The UI is simple and gets the job done :-)

Speaking of new apps, I've been working on an expense app that works specially well for travelers. It shows your charges on a map and so you can tell how much you spend on a trip :-) It even converts charges to USD in real-time when you spend in a foreign country. Check it out!