Tumblrstats is an interesting web application built on the Tumblr API which shows you information about your tumblelog in a nice format. You just need to key in your tumblelog`s name and the Tumblrstats will present you with all the data like when did you start your tumblelog and the number of posts you have made till date. It also gives you an average of the no. of posts you made on a daily basis.
It also gives you a detailed info about the no. regular posts, links, quotes, photo posts, conversations, video posts and audio posts you have made till date. It goes one step further and presents you with a pie chart of all the information! There is also a nice graphical information about your posting frequency and how often do you reblog content on your tumblr. You can see the tumblrstats of some tumblelogs which we like.