Wether you have one product or many, Bugz supports as many products as you like. And there is no limit to the number of tickets.
Trial is fully functional for 30 days. If you want to continue using Bugz after that, please buy a license. Version 2.4.0.
As a developer you need something to keep a list of outstanding issues or possible future enhancements. You can use pieces of paper, a textdocument, a spreadsheet or something like Bugzilla. Bugz is intended for those developers who need something more than simple lists, but have no need for a full blown server solution.
Mac OS X 10.9 or higher is required to run Bugz.