This clinical study compared the Storybook mobile application with cognitive behavioral therapy (CBT). The research focused on addressing pediatric sleep problems and improving sleep hygiene. Another important monitored aspect was the parent-child attachment. The interventions utilized a psychoeducational method based on cognitive behavioral therapy. The second tested method was a behavioral intervention through the Storybook mobile application. The sponsor and executor of this study was the Universidad Católica de Cuenca. According to the available information, this scientific study has already been officially completed.