A detailed overview of features related to chatbot-based mental health apps

 A detailed overview of features related to chatbot-based mental health apps found in our study.

App	Purpose	Targeted concerns	Conversation flow	Media types used	Crisis support	Evidence-based techniques
ADA	Digital screener	Anxiety and depression	Guided	Text	None	CBTa
Chai	Conversational companion	None	Guided	Text and emoji	None	CBT
Elomia	Virtual therapist	Stress, anxiety, depression, self-care, sleep disorder, relationship issues, low self-esteem, and loneliness	Open-ended	Text	Access to self-care tools	CBT, mindfulness, positive psychology, and symptoms tracking and monitoring
Mindspa	Virtual therapist	Anxiety, depression, self-care, relationship issues, and low self-esteem	Guided	Text and video	Availability of crisis related information and access to self-care tools	CBT, mindfulness, positive psychology, and psychoeducation and information
Nuna	Digital coach	Stress, anxiety, depression, and self-care	Open-ended	Text and emoji	Availability of crisis related information and access to self-care tools	CBT, mindfulness, positive psychology, symptoms tracking and monitoring, and psychoeducation and information
Serenity	Conversational companion	Anxiety, self-care, sleep disorder, and relationship issues	Guided	Text and emoji	Access to self-care tools	CBT, mindfulness, and acceptance and commitment therapy
Stresscoach	Digital coach	Anxiety, stress, and panic disorder	Guided	GIFb, text, and emoji	Availability of crisis related information and access to self-care tools	CBT, mindfulness, and psychoeducation and information
Woebot	Digital coach	Stress, anxiety, depression, self-care, relationship issues, and loneliness	Semiguided	GIF, text, audio, video, emoji	Availability of crisis related information and access to self-care tools	CBT, DBTc, mindfulness, and symptoms tracking and monitoring
Wysa	Digital coach	Stress, anxiety, depression, self-care, and sleep disorder	Open-ended	GIF, text, audio, video, emoji, images, and acronyms	Availability of crisis related information, access to self-care tools, access to professional therapist, ability to detect potential crisis from the chat, and ability to notify designated personnel	CBT and mindfulness
Youper	Digital coach	Self-care	Guided	Text	Availability of crisis related information, access to self-care tools, and access to professional therapist	CBT, DBT, mindfulness, positive psychology, psychoeducation and information, and acceptance and commitment therapy

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aCBT: cognitive behavioral therapy.

bGIF: graphics interchange format.

cDBT: dialectical behavior therapy.