The Stockton Police Mobile Phone App has many functions...from videos with shopping safety tips to reporting graffiti on buildings.
Police are hoping the app will keep people more informed and help them get more involved reporting crimes.
Stockton Police Officer Joe Silva says many people want to know about crime where they live.
"Big component is crime mapping, they are going to be able to zero in on their neighborhoods to see exactly what kind of crime trends are occurring, they are also going to be able to see up to date news."
- Joe Silva, Stockton Police Officer
Silva says people will be able to send in photos, receive alerts, and follow police on Facebook.
The free app is available through the itunes store and Google Play for Android.
Stockton Police are looking to question a man who might have dropped off the gunmen in the Bank of the West robbery and shootout in July.
After a dramatic drop in Stockton's homicide rate over the last couple of years, the violent death numbers are going back up again.
The City of Sacramento Police Department says the crime rate has dropped significantly for the second year in a row. The police chief credits more community involvement.
Hit-and-run collisions could soon trigger a community alert to track down the fleeing drivers, under a bill now in the California legislature.
Police say they've made several arrests in connection to a possible social media threat made against Rocklin High School.