This study investigates the development and efficacy of a multilingual tourism application designed to enhance tourism development in Mahasarakham Province, Thailand, focusing particularly on its utility for foreign students due to the region's educational allure and cultural heritage. The application features a comprehensive suite of services, including weather information, personalized travel recommendations, navigational assistance, and detailed local guides covering dining, healthcare, lodging, cultural practices, and historical insights, thereby distinguishing it from conventional tourism apps. The results of the study reveal significant outcomes. Expert evaluations yielded a Content Validity ratio (Content validity) of 0.86, indicating high relevance and accuracy of the app's content. The application's Reliability stood at 0.91, reflecting its consistency and dependability. Additionally, the Objectivity score was 0.80, suggesting the app's impartiality and fairness in presenting information. These results affirm the application's effectiveness in providing a reliable, accurate, and user-friendly resource for enhancing tourists' experiences while promoting cultural understanding and economic development within Mahasarakham Province.