Decon Field Guide vs EPA RSL/RML
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
EPA RSL/RML
This app provides chemical-specific concentrations for contaminants in air, water, and soil. These levels help determine if further investigation or cleanup is needed. It is updated twice a year.
- Regional Screening Levels (RSLs)
- Removal Management Levels (RMLs)
- Chemical-specific concentrations
- Risk-based levels
- Updated twice a year
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US EPA Regional Screening Levels and Removal Management Levels The US Environmental Protection Agency Regional Screening Levels (RSLs) are chemical-specific concentrations for individual contaminants in air, drinking water and soil that, if exceeded, may warrant further investigation or site cleanup. The Regional Removal Management Levels (RMLs) are chemical-specific concentrations for individual contaminants in tap water and soil that may be used to support the decision for EPA to undertake a removal action. The RSLs and RMLs are risk-based levels, calculated using the latest toxicity values, default exposure assumptions and physical and chemical properties. They are updated twice a year. For more information, please see the RSL (https://www.epa.gov/risk/regional-screening-levels-rsls) and RML (https://www.epa.gov/risk/regional-removal-management-levels-chemicals-rmls) websites.
Screenshots
Verdict
The clearest difference is review sentiment: EPA RSL/RML at 50% against Decon Field Guide's 0%. EPA RSL/RML also leads on monetization model (free vs ad-supported) and iOS requirement (11.0 vs 15.1). Decon Field Guide's advantage is rating (4.6 vs 4.0). On price, ratings volume, update cadence and ads 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 4.0. Both are backed by a comparable volume of ratings — 8 and 3 respectively. Written reviews complicate that: 0% of Decon Field Guide's written reviews are positive against 50% of EPA RSL/RML's, so the app with the better star average is not the one people write more warmly about.
Decon Field Guide ships an update every 2 months, EPA RSL/RML every 5 months. The most recent releases landed on October 25, 2026 and October 13, 2026 respectively.
| Parameter | Decon Field Guide | EPA RSL/RML |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (8 ratings) — better | 4.0 (3 ratings) |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 8 — better | 3 |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Ad-supported | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 11.0 — better |
| Further details — not scored | ||
| Size | 74 MB | 23 MB |
| Age rating | 17+ | 4+ |
| Developer | First Line Technology | United States Environmental Protection Agency (USEPA) |
Customer experience
Decon Field Guide
EPA RSL/RML
In-app purchases
Decon Field Guide
No in-app purchases
EPA RSL/RML
No in-app purchases
Questions
Is Decon Field Guide free?
Is EPA RSL/RML free?
Which has better reviews, Decon Field Guide or EPA RSL/RML?
Do Decon Field Guide or EPA RSL/RML have ads?
Which is updated more often, Decon Field Guide or EPA RSL/RML?
Other comparisons
