Joshua Aaron
ICEBlock is an online map iOS-only application service that provides locations of Immigration and Customs Enforcement (ICE) agents in the United States which is reported by app users. The app was developed by Joshua Aaron, who began developing it in April 2025. At the beginning of July, the app was the third-most popular free app on the App Store, with around 95,200 users. The app was removed from the App Store in October 2025, after the Department of Justice urged Apple to do so. It was compatible with iPhone XR and later.
ICEBlock allows users to report the locations of ICE agents; optionally, they can also provide additional information about the agents. Reported sightings are visible within a five-mile radius for four hours. Users nearby are also alerted when a sighting is reported. The app also warns that it is not to be used for the incitement of violence or for interfering with law enforcement.
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