The STR Quick-Reference App is an Android application designed to provide users with a comprehensive guide to Christian apologetics, ethics, and other important topics. Developed by Subsplash Inc, the app is available for free on the Google Play Store.

The app features text and video resources that summarize key information about being an ambassador for Christ, other worldviews, and classical Christian perspectives on important issues. The STR Quick-Reference App is an excellent resource for those looking to engage in thoughtful conversations about life's key issues.

Overall, the STR Quick-Reference App is a well-designed and informative app that provides users with a wealth of knowledge on important Christian topics. For more information about Stand to Reason, the organization behind the app, users can visit their website at str.org.