At this summer's HOPE conference, Joshua Aaron spoke about ICEBlock, his iPhone app that allows users to anonymously report ICE sightings within a 5 mile radius, and to get notifications when others report ICE sightings near them. You can see the full talk, and the lively/infuriating Q&A, here,
There are lots of better versions that exist. Unfortunately they haven’t received the same amount of traction, which is important for this type of app. Here’s one: https://fire-app.net/
How is this any better? From the site it appears to also be closed source with no security audit and using push notifications.
It’s better because you can download it directly from the site. And also they have a web version.
That only solves one problem, unfortunately. Other than that, the FIRE app seems to have the same problems as the ICEBlock app.