Applying contemporary growth hacking and engagement techniques to making people feel afraid and seek private security is just abominable. LA county is 10 million people - there are going to be all kinds of criminal activities on any given day, but rarely anywhere close to you. The app though will make sure even a minor thing a few miles from you gets you revved up. Just a recipe for more social disfunction.
The worst part is that LA county and city decided to use Citizen for contract tracing during the pandemic, which drove up downloads in the LA: https://covid19.lacounty.gov/covid19-news/la-county-city-lea... - they really need to push back on this vigilante stuff now.