Mobile application "Fun D" is an innovative oral health promotion was developed by a team of dental personnel from dental work. Hospital HQ Krabi The application of technology application functions can be accessed quickly and easily. Suitable for people of working age group This is a group of people living hustle. Ios and Android applications, the system can be used to assess the state of their oral health. Assessment cavities, tooth decay by using a thermometer. Assessed body mass index (BMI) /