Development of Android-based psychology service application using Open Unified Process was implemented in this scientific work. The purpose of the development using OpenUP was to verify the agile dan lightweight characteristic of OpenUP method. Furthermore, a development method should bolster the quality of the result product. The OpenUP version implemented in this development is 1.5.0.4 including role, task, artifact, and other components during the application development. From the evaluation, OpenUP method provides a quite effective result based on role acquired, use case implemented, and artifact produced. It also produces well-quality application based on compatibility, performance, and survey response. With that result, OpenUP is expected to be a widely used development method and the application produced could bring benefits while also to be further developed. © 2020 IEEE.