CHLOREP vs DTD Tracker Mobile
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CHLOREP
This app provides rapid access to critical information and expert support for chlorine emergencies. It connects responders with industry expertise and resources for effective incident management. Designed for a limited group of authorized users.
- Emergency response information
- Expert support via telephone
- Deployment of emergency equipment
- Access to CHLOREP Handbook
- Team contact information
- Network of response teams
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Launched in 1972, CHLOREP (the Chlorine Emergency Plan) is The Chlorine Institute’s mutual aid program that provides a rapid and effective response to chlorine emergencies in the U.S. and Canada by ensuring that transportation service providers, end-users, first responders, hazmat teams and others have quick access to accurate information and industry expertise. Supported by chlorine producers, packagers and specially trained emergency response contractors, CHLOREP provides emergency responders with expert support via telephone within minutes, and if needed, will rapidly deploy emergency equipment and personnel to the scene of any chlorine emergency in the U.S. or Canada. The CHLOREP network includes more than 80 response teams from 22 Chlorine Institute member companies across the U.S. and Canada, as well as 11 emergency response contractors who meet the Institute’s stringent performance requirements. The CHLOREP app was created to provide CHLOREP Teams with a more user-friendly and readily accessible version of the CHLOREP Handbook, CHLOREP Team contact information and other information relevant to the CHLOREP network and response to chlorine emergencies. Access to the app is granted to a limited group of individuals (primarily CI members, rail partners, and federal agencies).
DTD Tracker Mobile
This app provides advanced security solutions for asset protection and recovery, including GPS tracking and video analytics. It supports law enforcement agencies with data-driven intelligence to prevent and detect crime, aiding in apprehension and asset recovery.
- GPS tracking
- Video analytics
- Asset protection
- Crime detection
- Law enforcement support
- 24/7 tracking support
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Founded in 1971, 3SI is a market leader in pioneering advanced security solutions for asset protection and recovery. We are always ahead of the curve starting with the commercialization of dye and ink staining, to our ongoing development in GPS tracking and beyond. 3SI and Wren Solutions merged in June 2023. Leveraging a combined 90 years of experience, we are leaders in security technology solutions that deliver proven people, asset, and loss protection. By enabling a robust defense against the rapid rise of violent robbery and organized retail crime afflicting our communities, 3SI and Wren help customers prevent and detect crime while safeguarding their staff and patrons at more than 75,000 locations worldwide. Our combined solutions include asset tracking, video analytics, and seamless data transmission during criminal incidents, giving law enforcement a crucial edge in apprehension, asset recovery, and convicting criminals. Our solutions make a real impact and have assisted law enforcement with over 19,000 arrests. CovertTrack, a 3SI Company, supports more than 3,000 federal, state, county, and municipal agencies with tracking, tactical, and surveillance solutions, further aiding their efforts to proactively combat crime within their jurisdictions, leading to immeasurable arrests. Recognizing the varying needs across law enforcement branches, we’ve customized solutions for them. Our vision is to create a safer world. Law Enforcement Our solutions supply actionable, data-driven intelligence to over 10,200 law enforcement agencies, sending this information automatically to their dispatch centers and officers for prompt responses to financial and retail crimes. The trust these agencies place in our notifications isn’t coincidental; it’s cultivated through the efforts and training provided by our Law Enforcement Division (LED). Our LED comprises 24 dedicated, retired law enforcement professionals with unparalleled expertise. 24/7 Support Crime is not a 9-to-5 problem, and successful crime solutions need to be available round-the-clock. To support our solutions, our 24/7/365 Tracking Support Center (TSC), based in the USA, is on the job. Every crime event involving a 3SI solution is logged and managed by the TSC, and we support local dispatchers and law enforcement every step of the way during an active track. The same 24/7 support services are available to our customers because we know that you need support when you need it. Product Installation, Maintenance and Training 3SI’s dedicated Field Service Organization provides industry leading installation, maintenance and training. Our products support the do-it-yourself as well for customers who prefer to handle on their own. Training videos and guides are available at our Customer Portal.
Screenshots
Verdict
The clearest difference is rating: CHLOREP at 5.0 against DTD Tracker Mobile's 2.0. DTD Tracker Mobile's advantage is update cadence (monthly vs every 5 months). On price, ratings volume, ads and in-app purchases 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.
CHLOREP holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 2 and 4 respectively.
CHLOREP ships an update every 5 months, DTD Tracker Mobile monthly. The most recent releases landed on June 11, 2026 and June 5, 2026 respectively.
| Parameter | CHLOREP | DTD Tracker Mobile |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | 2.0 (4 ratings) |
| Positive reviews | — | 0.0% of reviews |
| Number of ratings | 2 | 4 — better |
| Update frequency | Every 5 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.6 — better |
| Further details — not scored | ||
| Size | 61 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Chlorine Institute | 3SI Wren Intermediate Holdings, LLC |
Customer experience
CHLOREP
DTD Tracker Mobile
In-app purchases
CHLOREP
No in-app purchases
DTD Tracker Mobile
No in-app purchases









