Table 2.

Review of existing apps’ sharing strategies.

References	App names	Sharing methods
Kuhn et al [33]	CBT-I Coach	Users can email data to themselves
Matthews and Doherty [34]	Mobile Mood Diary	Users asked if they would like to upload their data from the app to an external server. A web-based tool allows users to visualize their recorded data. Only users have log-in credentials for this tool, and the idea was that they would log on at the beginning of their session with their therapist so they could review
Rivzi et al [35]	DBT Coach	Button within app’s settings menu that a user could press to send data. Data would be uploaded to a cloud file that could be accessed by research staff
Reger et al [36]	PE Coach	App did not facilitate electronic sharing of any data. This was noted as a limitation of the app by the researchers
Pramana et al [37]	SmartCAT	Therapist can access user’s data through a web-based portal