This app makes it easy to boycott brands that support the genocide on the Palestinians. What is nice is that it shows why one should boycott a brand with sources.

Android: https://play.google.com/store/apps/details?id=com.bashsoftware.boycott&hl=en-US&pli=1

Apple: https://apps.apple.com/us/app/no-thanks-app/id6476206516