MAST: Human Intelligence App is a powerful tool designed to assist in worker safety and meaningfully contribute to the fight against human trafficking in the Thai Fishing Industry. Users of the app are primarily Thai, Cambodian, and Myanmarese workers in the Thai fishing industry. They can record their locations as they travel, report their real-time witnessing of potential criminal activity, and send alerts if they are in danger. The app has numerous features including crowdsourcing communications, registration of jobs for self-monitoring of progress and location, emergency contact alert management, and education about worker rights, jobs, and potential employers. In addition, inside the app users can chat with other workers, see red-flag vessel warnings, and local weather. The app is available in English, Thai, Khmer, and Burmese languages