The ESTA Mobile app simplifies the process of applying for travel authorization for Nationals of Visa Waiver Program countries. It offers two main features: applying for a new individual application and searching for existing applications. The user-friendly interface allows travelers to easily create a new ESTA application, make payments, and submit their requests for processing. This ensures a quick assessment of their eligibility to travel to the United States without a visa.

In addition, the app provides a convenient way for users to check the status of their existing applications through the 'FIND IT' feature. It is recommended that users complete their ESTA applications at the time of booking travel, but no less than 72 hours before their flight. Overall, ESTA Mobile enhances the travel experience by making the authorization process more accessible and efficient.