Author of Traccar here. Pricing is for SaaS solution hosted on our servers. Software itself is completely free and open source.
As for GDPR compliance, users are in full control of their data. You can delete anything you want from the system. We do collect some anonymous aggregates statistics from servers, but that can easily be disabled in the configuration.
As for GDPR compliance, users are in full control of their data. You can delete anything you want from the system. We do collect some anonymous aggregates statistics from servers, but that can easily be disabled in the configuration.