This study presents the development of a mobile application on Android operating system created by Flutter framework for daily dietary self-monitoring based on nutrition labelling information. The app allows users to input data from food product labels, including serving size, energy value, total fat, saturated fat, cholesterol, protein, carbohydrates, sugars, sodium, and potassium. The app calculates the nutritional daily intake for each nutrient and compares it with the Thai Recommended Daily Intakes (Thai RDI). The app displays the total amount and percentage of daily intake for each nutrient, enabling users to monitor their dietary consumption. The app provides a user-friendly interface for data entry and visualizes the results through bar charts and line graphs, facilitating easy identification of potential dietary concerns or imbalances. The app aims to empower users to make informed dietary choices and maintain a balanced and healthy nutritional intake.