When designing a charity app for Meta (formerly known as Facebook), it is important to keep in mind the goals and values of the company. Meta's mission is to "bring the world closer together" and to "build technologies that help people connect with others, find communities, and grow businesses." With this in mind, a charity app on the Meta platform should aim to connect people with causes and organizations that they care about. One approach could be to allow users to search for charities based on their interests, location, or type of charity. The app could also feature stories and updates from charities to help users understand the impact of their donations. Another important aspect to consider is the ease of use and security of the app. Users should be able to easily donate to charities without worrying about the safety of their personal information. The app could also feature options to set up recurring donations or to donate a portion of the user's purchases to a selected charity. Overall, the charity app should align with Meta's mission and values by providing a way for users to connect with causes and organizations that make a positive impact on the world.