The current study was a qualitative follow-up of a randomized controlled trial. In the original study, 81 participants
were randomized into either guided behavioral activation self-help treatment or to a guided mindfulness-based treatment, both administered through smartphone applications. The principal aim of the original study was to compare the effectiveness of the two smartphone-delivered treatments. The results from the original study showed that there were no significant interaction effects of group and time on any of the outcome measures, however among the participants with higher initial severity of depression, the behavioral activation treatment was significantly more effective, whereas among those with lower initial depression severity, the mindfulness treatment worked significantly better. The current study focused on the participants' experience from the behavioral activation treatment and was initiated six months after the treatment had been completed in the original study.