Inclusion Criteria:  suffer from depression symptoms. aged 20 and above. being able to communicate in Chinese or Taiwanese. used Wi-Fi smartphones. Agree and obtain written consent. In the school term during research.  Exclusion Criteria:  Have a full-time job. Who has been diagnosed with bipolar disorder, Asperger syndrome, and schizophrenia. Who have the health conditions associated with visual impairments, auditory impairments, and mobility impairments, that are limited to the use of accessibility mobile applications.