The Feasibility of a Family-Focused CBT Skills Self-Help App

•Access to early evidence-based intervention for mental health concerns is limited.•mHealth is a possible avenue for prevention of mental health concerns in children.•An iterative development process produced a viable anxiety self-help app for families.•Anchors Away was found to be an acceptable form of childhood mental health self-help.•Families enjoyed and were open to buying this app for child mental health prevention.