Table 2.

Results of the interviews with therapists.

First-order categories	Second-order themes	Third-order aggregate dimensions
Planning sessions and becoming familiar with patient history Note taking after the session Analog versus digital organization of therapy documents	Nature of organizational work	Day of a therapist
Appointment management is stressful Therapy worksheets get lost or are difficult to organize Insufficient current digital organization tools Paper-based documentation makes planning difficult (especially outside the office) Session planning and after-session notes are sometimes lengthy Guidebooks for planning sessions are too rigid and difficult to adapt to individual patients	Problems that emerge during the workday	Day of a therapist
Practicality Open and curious toward apps	Attitudes toward app use	Attitudes toward digital apps
Positive attitudes toward app use in psychotherapy Therapy app could potentially enhance therapeutic relationship Prescription of therapy app fosters adoption Unsatisfactory current therapy apps	Attitudes toward app use in psychotherapy	Attitudes toward digital apps
Documentation and writing session protocols Support session preparation via patient history and therapeutic resources Appointment management Monitoring of patient progress	Benefits of bCBTa apps for therapists	Expected features of bCBT apps
Mood and symptom tracking Collecting therapeutic toolkit for harder moments Better questionnaire and diagnostic management Offer and remind regarding therapy resources and interventions Encourage independence of patients	Benefits of bCBT apps for patients	Expected features of bCBT apps
Ease the organizational workload and protect in-session time Contribute to the connection between patient and therapist Extra help in structuring therapy Visualization of achieved milestones and successes	General benefits of bCBT apps	Expected features of bCBT apps
Personalization of intervention content Dynamic versus monotonous experience to support changes in use over time Easy and intuitive to use No advertisements	High usability	Expected qualities of bCBT apps
App should not distort therapist work-life balance App should not replace in-person sessions but complement them App should preserve seriousness of therapy	Concerns regarding therapeutic qualities of a bCBT app	Concerns regarding app integration into therapy
Data security Wasting time with unhelpful or addictive features	General concerns regarding smartphone apps	Concerns regarding app integration into therapy

^abCBT: blended cognitive behavioral therapy.