DOT Chart 17 vs Decon Field Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DOT Chart 17
Access a full-color display of hazardous materials markings, labels, and placards. This app provides quick visual information and regulatory citations for shippers and carriers. It serves as a general guidance tool for hazardous materials regulations.
- Full-color display of markings, labels, and placards
- Access to Hazardous Materials Regulations (HMR) citations
- Quick visual information for shippers and carriers
- Mobile access to DOT Chart-17
- Guidance on 49 CFR Parts 171-180
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The Pipeline and Hazardous Materials Safety Administration’s (PHMSA) DOT Chart-17 provides a full-color display of the markings, labels, and placards specified in the Hazardous Materials Regulations (HMR; 49 CFR Parts 171-180). This mobile application allows shippers, carriers, and other stakeholders to quickly access visual information and HMR citations from DOT Chart-17. Note that this application is intended for general guidance only and should not be used to determine compliance with 49 CFR, Parts 100-185.
Decon Field Guide
This reference app provides quick and efficient decontamination methods for hundreds of threats. It features a classic Threat Index, pictorial instructions, and an in-app dwell timer to guide users through mission execution. Designed for approved users, it aims to make anyone an instant decontamination expert.
- Threat Index for decontamination methods
- Pictorial instructions
- In-app dwell timer
- Covers hundreds of threats
- Designed for approved users
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Imagine decontamination in the palm of your hand. Introducing the all-new, redesigned Decon Field Guide. Using the same classic Threat Index, quickly and efficiently determine proper decontamination methods for hundreds of known and emerging threats and execute your mission flawlessly utilizing pictorial instructions and in-app dwell timer. Become an instant decontamination expert with the Decon Field Guide. Only available for approved users. Download now.
Screenshots
Verdict
The clearest difference is rating: Decon Field Guide at 4.6 against DOT Chart 17's 2.3. Decon Field Guide also leads on update cadence (every 2 months vs every 10 months). DOT Chart 17's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, review sentiment, ratings volume 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.
Decon Field Guide holds the better App Store score, 4.6 against 2.3. Both are backed by a comparable volume of ratings — 3 and 8 respectively. Written reviews split almost evenly too, at 0% and 0% positive.
DOT Chart 17 ships an update every 10 months, Decon Field Guide every 2 months. The most recent releases landed on September 10, 2026 and June 4, 2026 respectively.
| Parameter | DOT Chart 17 | Decon Field Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 2.3 (3 ratings) | 4.6 (8 ratings) — better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Number of ratings | 3 | 8 — better |
| Update frequency | Every 10 months | Every 2 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 20 MB | 73 MB |
| Age rating | 4+ | 17+ |
| Developer | Pipeline and Hazardous Materials Safety Administration | First Line Technology, LLC |
Customer experience
DOT Chart 17
Decon Field Guide
In-app purchases
DOT Chart 17
No in-app purchases
Decon Field Guide
No in-app purchases
