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Download SplitSec
Install the Android app and follow the guided setup. The iPhone receiving app is coming soon.
Chicago community safety pilots
Help your community become aware faster.
Join a SplitSec community pilot and use your smartphone to help detect possible gunfire, receive nearby safety alerts, and stay connected with the people you care about. Fully private. Runs on Android phones.
On-device detectionNo continuous recordingNo audio streaming
How the pilot works
Three simple steps to get started
You choose how you want to participate. Enable detection, receive nearby alerts, build an AlertCrew, or do all three.
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Choose your protection
Enable gunfire detection, nearby safety alerts, or both, based on how you want to participate.
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Invite your AlertCrew
Add family, friends, or neighbors so the people you trust can be notified when you confirm an alert.
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How would you like to use SplitSec?
Choose one or both options.
Enable gunfire detection
Join an AlertCrew and/or get nearby alerts
Privacy first
Designed to detect sound patterns, not record your life.
SplitSec uses the microphone only to analyze sounds needed for possible gunfire detection. Privacy-first, on-device detection. No continuous recording or audio streaming.
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Processing stays on the phone
The app analyzes sound locally rather than continuously sending microphone audio to the cloud.
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You remain in control
You decide whether to enable detection and whether to confirm a possible gunfire alert.
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Location supports nearby awareness
Location helps determine whether alerts are relevant nearby and supports coordinated detection.
AlertCrew
Protect your people
Create a trusted circle of family, friends, or neighbors who can receive alerts you confirm.
SafeTogether
Receive nearby awareness
See confirmed nearby safety alerts without revealing a reporting user's exact location.
Community
Strengthen the network
Each participating Android phone can help expand community awareness without new city infrastructure.
Frequently asked questions
What residents should know
Microphone access allows the app to analyze sounds for patterns associated with possible gunfire. Privacy-first, on-device detection. No continuous recording or audio streaming.
Join your ward's community safety pilot.
Download SplitSec, choose how you want to participate, and invite the people you care about to your AlertCrew.
Download SplitSec for Android