As far as keywords in the title goes, my experience is that opinions are mixed. I say go for it - it does (for now) increase the importance of those keywords in searches.
As for tools, AppAnnie is a great free tool. Sensor Tower is another, but is not free. BUT, if you go the page that outlines the pricing structure, you'll see a link at the bottom that says something like "Get a free account if you are an indie developer." All you need to do is write up a review of the service on your blog and send them the link and then they will give you a free developer account (it lets you track up to 2 apps at a time). Not too bad for free!