You may download Tilia anytime from the Download page. To unlock the advanced graphics features of Tilia, you must purchase or acquire a license and associated Product Key, which unlocks the advanced features. After purchasing the Professional or Multiple-use Teaching license, you will be asked for the name of the owner or registered user and for that person's email address, who may or may not be the same person as the purchaser. The Product Key will be emailed to the owner. If you are installing the program for the first time, you will be prompted for the Product Key the first time you run the program (not during the installation process). Otherwise, you may enter a new Product Key at any time with menu selections Help➜Registration.
Professional version includes all functionality, including graphics. For not-for-profit institutions, the license is to the individual person, who may install on all computers under his/her
control. For commercial for for-profit institutions, the license is to the individual computer.
Free version of Tilia includes all spreadsheet and metadata options. You must provide your name and academic institution. License is to a single individual.