The results are as follows: 1) The result of physical surveys in the area found that there is no application to assist tourists in finding accommodation places. 2) from study, the majority of the population is used. Android is more than IOS and has studied the factors that affect the use of an application on a smartphone 3) to collect information by exploring the area and general conditions of the homestay in conjunction with an interview with an interview. A homestay owner to store information about related information that helps support the project.