# Street Sentinel

> Real-time gunshot detection and alert system for community violence prevention. (iPhone/iPad app by Indiana University.)

- Source: https://appshunter.io/ios/app/street-sentinel/id1673037976 (this page in markdown: same URL + `.md`)
- Developer: [Indiana University](https://appshunter.io/developer/383456988)
- Category: Utilities
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 17+
- Requires: iOS 13.0 · 12 MB
- Languages: English
- Released: 2023-09-15
- Data updated: 2026-08-18
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/street-sentinel/id1673037976/reviews.md

## What is Street Sentinel?

Street Sentinel is a NSF-funded project that uses off-the-shelf hardware and custom deep learning algorithms to recognize gunshots in real-time, including where and when they occur. Community intervention workers control the placement of detectors in the community and use a smartphone-based alert system, developed by the research team, to support their violence prevention efforts. Current evidence suggests that community intervention workers can stop violent retaliations if they are able to respond quickly when violence occurs. This mobile app therefore allows the research team uses controlled experiments and causal inference methods to assess the impact of the gunshot detection network on community-led violence prevention.

## Key features

- Real-time gunshot detection
- Location and time of incidents
- Smartphone-based alert system
- Supports community intervention workers
- Violence prevention assessment


## Frequently asked questions about Street Sentinel

### What is Street Sentinel?

Street Sentinel is a mobile application that uses custom deep learning algorithms to recognize gunshots in real-time, providing information on where and when they occur. It is designed to support community intervention workers in their violence prevention efforts.

### How does Street Sentinel work?

The app works in conjunction with off-the-shelf hardware detectors placed in communities. When a gunshot is detected, the system sends alerts to community intervention workers via a smartphone-based alert system.

### Who developed Street Sentinel?

Street Sentinel is a project developed by Indiana University, funded by the NSF. The research team also developed the smartphone-based alert system.

### What is the primary goal of Street Sentinel?

The primary goal is to enable community intervention workers to respond quickly to violent incidents, potentially stopping retaliations. It also aims to assess the impact of gunshot detection networks on community-led violence prevention.

### What devices does Street Sentinel support?

Street Sentinel is supported on iPhone, iPad, and iPod devices.

### What is the age rating for Street Sentinel?

Street Sentinel has an age rating of 17+, indicating mature content or themes.

### When was Street Sentinel last updated?

Street Sentinel was last updated on December 15, 2024, with version 0.5.2.

### Does Street Sentinel have ads?

No, Street Sentinel does not contain advertisements.

## Version history (last 4 releases)

### 0.5.2 — 2024-12-15

This version includes the following bug fixes and enhancements:

= The date in the incident list was formatted incorrectly.
= All personnel (e.g., managers and non-managers assigned to a device) receive notification of a gunshot detection.

### 0.5.1 — 2024-12-02

This version contains the following enhancements and bug fixes:

= Managers can now set the location of a deployed device.
= Password reset from the login didn't work under certain situations.

### 0.3.1 — 2024-06-27

This version include the following updates:

* Added support for push notifications.
* Bug fixed and performance enhancements.

### 0.1.0 — 2023-09-15

No release notes.

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All apps by Indiana University: https://appshunter.io/developer/383456988

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-18.*