The use of agile methods in mobile service development has gained much attention in software design research. In addition, involving the potential stakeholders of the mobile service in the design and development process has become vital in achieving the best service experience. Many application development methodologies, such as user-centred design (UCD), ensure that stakeholders have direct involvement in the design and development. This paper describes experiences of designing a mobile concept where various stakeholders, such as tourism companies, target application users, business experts and the application developers, were involved in the design and development process. The main focus of this paper is the roles and contributions of stakeholders in mobile services for outdoor activities such as kayaking, hiking and biking. These outdoor activities are associated with different functional and non-functional requirements that are essential considerations during the design and development process. Therefore, we utilized the UCD principle as an appropriate method of involving all stakeholders in the design process, and we show that hearing the stakeholders’ voice is vital in the design of outdoor-based mobile service development.