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,
That only solves one problem, unfortunately. Other than that, the FIRE app seems to have the same problems as the ICEBlock app.