Questions, feedback, or support?

Contact us

Email: support@cdlmasteryapp.com

Please include a clear subject and enough detail for us to understand your question or issue.

Helpful details to include

For technical questions, include the device type, operating system, page or app screen involved, and a description of what happened.

For content feedback, include the topic, study guide, question, or state resource you are referring to.

Response times

We aim to review messages as quickly as possible. Response times may vary during development and launch preparation.

Licensing and official requirements

CDL Mastery provides educational preparation only. Questions about official licensing decisions, testing appointments, eligibility, fees, or state-specific requirements should be directed to the appropriate state licensing agency.