Digital Siren vs ISMTrack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Digital Siren
Receive real-time alerts for high-speed pursuits, emergency vehicles, and other critical incidents. The app automatically notifies you when you enter the range of an active event in participating US law enforcement agency territories. View a map showing your location and active event areas.
- High-speed pursuit alerts
- Code3 emergency vehicle notifications
- Critical incident alerts
- Automatic notifications
- Map view of active events
- Call 911 integration
- Feedback submission
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Digital Siren by PursuitAlert is an app that, once installed, will notify you of a high-speed pursuit, a Code3 emergency vehicle nearby, and numerous other critical incidents happening in your area. Digital Siren only requires the one-time action of downloading the Digital Siren App for your device. Once done, the user will receive the notifications automatically whenever they enter the range of a police pursuit or numerous other active critical events or emergency response. This service will be in effect for any participating state, county, or municipal law enforcement agency in the US. Thus, this service will continue to work as the user passes through various participating territories around the country. Users can pull up a map that will show their current location. If a pursuit or other event is active, a red circle will appear around their location, indicating an area where the event may be located. Users may also use the app to call 911 or to send feedback and user experience to Digital Siren by PrsuitAlert.
ISMTrack
This application serves as a system for tracking invasive species. It allows users to manage and monitor the presence of non-native plants and animals. The tool is designed for efficient data collection and management related to ecological threats.
- Invasive species tracking
- Management system
- Ecological data collection
- Species monitoring
- Data management
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Invasive Species Management Tracking System.
Screenshots
Verdict
The clearest difference is rating: ISMTrack at 5.0 against Digital Siren's 4.0. ISMTrack also leads on update cadence (every 5 months vs every 12 months). Digital Siren's advantage is ratings volume (8 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
ISMTrack holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: Digital Siren has 8 ratings behind it against 1, so its average is the more settled of the two.
Digital Siren ships an update every 12 months, ISMTrack every 5 months. Both last shipped on November 3, 2026.
| Parameter | Digital Siren | ISMTrack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (8 ratings) | 5.0 (1 ratings) — better |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 12 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 14 MB | 25 MB |
| Age rating | 4+ | 4+ |
| Developer | Pursuit Alert LLC | Charles T. Bargeron |
Customer experience
Digital Siren
ISMTrack
In-app purchases
Digital Siren
No in-app purchases
ISMTrack
No in-app purchases
