@garyovich The app is called Pipe Tool (v1.19) and it was around $3.99. It is linked to tobaccoreviews.com but unfortunately does not update as new blends are entered on that site. However, you can enter new blends yourself, customize the weights, do backups, etc. It even lets you calculate how long your tobacco will last based on how much you smoke. It's pretty cool. I guess P&T reached out to the developer of the app but never heard back. Still, it is worth the coin if you wish to cellar and keep decent records. There is another thread on here that has screen shots of it. If I can find it I will link it here.
Now we just need to get Kevin to develop an app for this site and one that links to luxurytobaccoreivews.com that updates as new blends are addred and reviewed (hint, hint).