The goal of this clinical trial is to test the preliminary efficacy of a brief mobile app targeting insomnia symptoms among veterans. In this study, we will enhance the mobile app, Insomnia Coach, with content from brief alcohol interventions to help veterans reduce both insomnia symptoms and alcohol use behaviors. We will compare those veterans who are randomly assigned to receive this brief mobile app intervention to those who receive a control condition. This will help us determine if veterans randomly assigned to receive the intervention experience greater improvement on outcomes compared to those who do not receive the intervention. The study involves a beta-test phase of the app to ensure feasibility and acceptability by veterans, followed by a randomized controlled trial with 130 veterans who meet criteria for insomnia and alcohol use disorder.

Inclusion Criteria:

• U.S. veteran aged 18 or older separated or discharged from service in the Air Force, Army, Marine Corps, Navy, or Coast Guard
• Not currently affiliated with active duty service or on active reserves or guard service
• Served since September 11, 2001
• No past 6-month treatment for alcohol or drug use or insomnia
• Alcohol Use Disorder Identification Test (AUDIT) score of 8 or higher
• Insomnia Severity Index (ISI) score of 10 or higher

Exclusion Criteria:

• Positive screening for other substance use disorders (not including cannabis use disorder)

Data will be shared in accordance with NIH guidelines and uploaded to the NDA repository.

Participants are asked to complete one of two mobile phone-based programs. They may not know which condition is the experimental condition and which is the control.