WeSafe, a Web-Based App (myPlan Thailand) is a culturally tailored web-based app designed to empower and support friends and family of IPV survivors. It gathers key data on survivors' demographics, relationship status, living situation, and children's ages to personalize the safety support plan. The app delivers comprehensive IPV information through text, videos, images, and illustrations, addressing culturally specific issues. It guides users in setting priorities through pairwise comparisons and includes a risk assessment tool adapted from Danger Assessment (DA)-Thailand. Based on the inputs, myPlan Thailand provides a tailored plan with supportive strategies, communication scripts, advocacy tips, self-care resources, and child safety strategies, enhancing overall safety and well-being.

Control group. The control condition will be the publicly-available Thai-language DV learning launched in 2019.49 This app screens users for Domestic violence (physical, psychological, and sexual violence), and provides information about 6 modules include 1. Understanding situation of domestic violence 2. Key principles of helping survivors 3. Guideline for helping survivors 4. Case management and working with multi professionals 5. Legal Proceedings and Justice System Processes for Domestic Violence and Intimate Partner Violence Cases 6. Selfcare for providers. This platform put the knowledge from understanding the basic situation through practical intervention for providers and other people who are interested in. It is optional to get the certificate if participants have 80% pass rate on quizzes.

WeSafe, a Web-Based App (myPlan Thailand) is a culturally tailored web-based app designed to empower and support friends and family of IPV survivors. It gathers key data on survivors' demographics, relationship status, living situation, and children's ages to personalize the safety support plan. The app delivers comprehensive IPV information through text, videos, images, and illustrations, addressing culturally specific issues. It guides users in setting priorities through pairwise comparisons and includes a risk assessment tool adapted from Danger Assessment (DA)-Thailand. Based on the inputs, myPlan Thailand provides a tailored plan with supportive strategies, communication scripts, advocacy tips, self-care resources, and child safety strategies, enhancing overall safety and well-being.

Knowledge and attitudes toward IPV measurement will be adapted from the Inventory of Beliefs about Intimate Partner Violence (IBIPV) with a 22-item self-report scale, with a seven-point response scale designed to assess participants' explicit attitudes toward IPV, and from the literature around friends/family response as describe by survivors and engagement behavior. There are 22 items, group into three subscales.The Justifying Partner Violence subscale (JPV; six items; e.g., "Sometimes abuse of the woman helps resolve conflictsbetween partners") deals with general behaviours of victims and abusers which may be used to legitimise or justify IPV.The Victims Responsible for Violence subscale (VRV; nineitems; e.g., "Battered women are responsible for battering,because they provoke it") deals with victim behaviours whichmay lead to women being blamed for IPV. Finally, theAbuser Responsible for Violence subscale (ARV; sevenitems; e. g., "Abusers are responsible for batterin

Empowerment to plan and take actions to safely support survivor will be measured by the Personal Progress Scale-Revised, which is a 28 items, 7-point Likert scale with focus on the important role of resilience and personal empowerment for women. The scale includes item such as "I want to help other women like me improve the quality of their lives). The reliability coefficient for this scale is .85.

This tool is a 23-item self-report scale designed to assess supportive actions undertaken by friends or family when concerned about a loved one's abusive relationship. Participants indicate for each item whether, in the past six months, they engaged in specific supportive behaviors and rate if they were helpful using a three-point response scale ("No (1)," "Yes(2), but I didn't think it was helpful," "Yes(3), and I thought it was helpful"). Items cover a range of actions-from active listening and validating concerns to facilitating safety measures and connecting with professional resources-providing an evaluative insight into both behavioral engagement and perceived effectiveness in supporting IPV survivors.

stress, frustration, and negative consequences for supporting the survivors (e.g., anger by friend/ family member) will assess the decisional conflict immediately post intervention. It will be adapted from the Decisional Conflict Scale (DCS) with 12 items test whether using the myPlan app to helps a friends/family to understand the advantages/ disadvantages of options for helping their friends in an abusive relationship, and to know her values related to those options (e.g., "I know my options for helping my friend who is in an unhealthy.", I am clear about which reasons for helping my friend are most important to me.", "I have enough advice to make decisions about helping my friend who is in an unhealthy relationship." The scale is a Likert scale; 5 = strongly agree;...1 = strongly disagree.