It offers a 30-day evaluation period for free testing. During this time, exported diagrams contain watermarks.
The latest StarUML Standard is typically priced around $129 per device, with a Professional version at $199 . The Risks of Cracked Software
After 30 days, users are legally required to purchase a license to continue using the software.
Attempting to use a "crack" for StarUML v5.0.2 involves significant risks: Simple one-time payment, use forever - StarUML