Signal, a nonprofit private messaging app, spends tens of millions of dollars annually to operate, with significant costs including infrastructure, labor, and registration fees. The app's end-to-end encryption technology and commitment to privacy come at a cost, with expenses such as storage, servers, and bandwidth totaling approximately $14 million per year. Signal relies on donations to support its operations, aiming to become fully supported by small donors. The app's costs are a necessary investment in providing a private and secure communication platform.