[Czarnian]

The feat of building that kind of app is impressive. I sure as heck can't do it, yet. I do have a few comments, though.

Refine your data classification. On one of your screenshots, you are listing "Arrests" as a type of crime. That's confusing. Also, consider filtering for violent crime rather than crime in general. That would be more in line with the stated purpose of your app.

Realign the usage from a real-time application to a planning application. You don't want your users to be fiddling with a smartphone in a bad neighborhood. That really increases the odds of getting mugged and defeating the purpose of the app.

I agree with some of the other posters that you should tone down the alarmist tone of the app. If nothing else, it's more professional.

Congratulations on your experiment.