HazMatIQ.app vs Reverse Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HazMatIQ.app
This offline companion app assists trained emergency responders in applying the HazMatIQ system during hazardous materials incidents. It offers rapid access to crucial decision-support information via a streamlined interface, ensuring reliability without internet connectivity.
- Offline functionality
- Decision-support information
- Streamlined interface
- Real-world reliability
- Companion resource for trained responders
Read full descriptionHide full description
The offline companion app for trained responders using the HazMatIQ system. The HazMatIQ Digital Companion is a fully offline field tool designed to support trained emergency responders in applying the HazMatIQ system during hazardous materials incidents. Built for speed, clarity, and real-world reliability, it provides rapid access to key decision-support information through a streamlined, intuitive interface—no connectivity required. This app is a companion resource only and does not replace formal HazMatIQ training; it is intended exclusively for responders who have already been trained in the system and need a dependable, easy-to-use reference during real-world operations.
Reverse Flow
This professional fireground hydraulics platform assists firefighters and pump operators in calculating complex flow rates, pump discharge pressures, and relay pumping requirements. It supports various nozzle types and allows for custom hose coefficients and elevation adjustments for accurate operational planning and decision support.
- Reverse Flow calculations
- Required PDP calculations
- Relay Pumping calculations
- Split Lay analysis
- Pump Chart storage
- Nozzle support
- Custom hose coefficients
Read full descriptionHide full description
The ultimate Fireground Hydraulics app! Constantly evolving and improving features. Currently includes: - Generous Suite of calculators - Friction Loss and Pump chart generators - Reference Materials - IOS Widgets - Pump operator classes Completely Free | No Purchase Required | Supported by the Reverse Flow Community Privacy Policy: https://reverse-flow.app/privacy.html Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is update cadence: Reverse Flow at weekly against HazMatIQ.app's every 2 months. Reverse Flow also leads on ratings volume (5 vs 1). On price, rating, 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.
On the App Store both sit at effectively the same score — 5.0 for HazMatIQ.app against 5.0 for Reverse Flow. That said, the two scores are not equally well evidenced: Reverse Flow has 5 ratings behind it against 1, so its average is the more settled of the two.
HazMatIQ.app ships an update every 2 months, Reverse Flow weekly. The most recent releases landed on November 5, 2026 and November 10, 2026 respectively.
| Parameter | HazMatIQ.app | Reverse Flow |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) | 5.0 (5 ratings) |
| Number of ratings | 1 | 5 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 6 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Drew Toma | DEREK ANDREW MURDOCK |
Customer experience
HazMatIQ.app
Reverse Flow
In-app purchases
HazMatIQ.app
No in-app purchases
Reverse Flow
No in-app purchases
Questions
Is HazMatIQ.app free?
Is Reverse Flow free?
Which has better reviews, HazMatIQ.app or Reverse Flow?
Do HazMatIQ.app or Reverse Flow have ads?
Which is updated more often, HazMatIQ.app or Reverse Flow?
Other comparisons
