Ecotourism is supposed to make efficient, responsible and sustainable use of tourism resources at the destination. The aims of ecotourism can be accomplished by encouraging the appropriate activities, enhancing eco-tourist experiences, and managing tourism resources in a sustainable manner. Smart ecotourism application refers to the innovative tools and approaches to improve the ecotourism practices and experiences. The smart application focusing ecotourism aspect has emerged as a result of the rise of Information and Communication Technologies (ICTs) and the need for sustainability. This study emphasis on young people who are likely to be first-time eco-tourists or to have little experience of ecotourism. However, young people are a great capacity to spread ecotourism awareness both in the present and the future. This study was designed and developed a smart application which aimed to allow young people to learn about ecotourism. This research was conducted using a qualitative approach, utilizing a case study in Klong Noi Community in Surat Thani Thailand. The results of this study will contribute to the current ecotourism literature and broaden understanding of the ICTs-based ecotourism, particularly on the Thailand context. Moreover, they will provide suggestions for ecotourism business in Thailand to develop the smart application attractive to the targets of young people.