Thanks for considering purchasing an application from Hardcoded Software. Once the purchase is completed, you will receive a registration key to unlock the application. This key will be delivered by email in a message with the subject "Hardcoded Software registration codes".
With HS apps, all updates are always free of charge. Hardcoded Software never charged for updates and never will.
The license you purchase allows you to use the application on any number of computers or operating systems.
The dupeGuru license works on all editions (Plain, ME and PE).
If you're still on OS X Tiger and thus using an old version of an application, be aware that the registration key you'll receive will not work. Don't worry, all you have to do is contact support after your purchase and I'll generate keys compatible with these old versions for you.