PIFster is a free social networking app designed for iPhone users, focused on charitable giving and community engagement. It allows individuals to contribute as little as $1 per month, empowering them to participate in selecting and supporting various charitable causes. Users can suggest causes, vote on them, and track the community's impact through videos and updates, fostering a sense of pride and connection among members.

The app features an interactive heatmap that visualizes donor activity, enabling users to see where contributions are being made and how their community is participating. PIFster not only encourages financial contributions but also invites users to promote causes they care about, regardless of their ability to donate. This unique platform blends social networking with philanthropy, creating a space for collective action and influence.