We are checking the top 100 results from google.com and 20+ google regions and recording current, previous, and last SERP results. We also allow you to input 3 competitor domains.
Please check out the tool and let us know what you think so far.
The site is live. Scroll down for the latest comments, but you can find the site here: serppagerank.com
Example screen shot which shows change in rank, your domain and competitor highlighting. I also filled in the exact search values for reference.