I have a couple methods that work great for me to have duplicates on my computer and my phone. The app store has the Cigar Scanner which is awesome, allows you to pick and log each size you own, what you rated it, date you purchased, and also allows you to keep a wish list of things you're interested in purchasing and a favorites list of things you loved. The other method I use is excel spreadsheets to log the sticks I want and the sticks I have, their sizes, and two different rating systems (0 - 5.0 and 1-5 stars if I'm lazy and don't want to use the rating calculator I modified from someone else). If you guys want my rating system it weighs the different categories of each stick (burn, construction, flavor and overall experience). Or if you want the entire spreadsheet file let me know I'll email it to you.