I just took a look at the update, and I really like the links to sponsoring vendors. To be honest, they might actually get some of my money, just from playing around on the app and seeing their names.
Thanks for the application! One thing I miss is having it adjust for the amount of VG v PG. I use a 30/70 mix to add to my unflavored nic and would like to have a category which calculates this for me.
I can do this in my head but I am lazy.