This is a really handy tool for high level demographic analysis that you can really drill down into, that can save you a lot of time, effort and money. Usually you will pay to access such data, depending on what you pay it can be a nasty data dump, usually outdated too or expensive.
I commend the developer for this tool the UI is really nice and it just works, they deserve success with this. I hope they are being sensible and trying to drive recurring revenue (affiliate links or subscriptions either could work) because the value depreciates without investment into both the quality of the data (breadth, recency and analysis) and also the UI needs maintaining and developing.
I hope that the dev soon adds the UK please - its small but useful.
Keep it up and GLWS