I love the app, it is what I wish Activity Monitor should have been and even more! I also love the name!
I can't fully appreciate it because I need to use it more for it to gather enough statistics about the apps I use.
But still, I already found at a glance that an app I thought inofensive was using much more energy than I thought.
Also, it's really reassuring seeing that my battery will last at least 4 more years ^_^