I had similar idea whileback so this app is interesting. What I would change: 1. Remove crime details. They are unnecessary. 2. Replace pins with transparent

I had similar idea whileback so this app is interesting. What I would change: 1. Remove crime details. They are unnecessary. 2. Replace pins with transparent canvas overlay showing level of danger or safety in shades of red and green. 3. Let user set the desired 'shade of danger'. A simple horizontal or vertical color selector showing shades of red will do. App should buzz every N minutes when users is in area with deeper shade of red unless they press the override button. That's all.