Keeping on top of your promo codes can be a big hassle. Most developers end up with text files by the dozen or complicated spreadsheets. You want to know when items were issued (they expire in 4 weeks), who they were shared with (so you can follow up with potential reviewers), and how many remain so you can manage the 50 codes allocated for each app revision.
Enter Tokens for Mac. This app simplifies the process of managing promo codes. With it, you can generate trackable codes that ping you back when they're redeemed. I had a chance recently to sit down and work with this app as well as talk with its developer, Oisin Prendiville.