MASD Alerting vs Reverse Flow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
MASD Alerting
Read full descriptionHide full description
Mach Alert is a full featured fire station alerting (FSA) solution designed to provide state of the art alerting functionality and reliability to public safety answering points (PSAP), fire and EMS facilities, and, with optional add-ons, to first responders in the field. Whether operating as a standalone system or via interface to a computer aided dispatch (CAD) product, Mach Alert is designed to minimize time spent dispatching at the 911 center and maximize the amount of critical information delivered to first responders when they need it most with tones, voice, and a robust catalog of add-ons and customization options. The Mach Alert Mobile Application is an optional companion for full Mach Alert FSA systems. Like functionality is only available with an associated services agreement.
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 in-app purchases: MASD Alerting at none against Reverse Flow's 4. MASD Alerting also leads on iOS requirement (12.0 vs 15.0). Reverse Flow's advantage is update cadence (weekly vs every 13 months). On price, ads and device support 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. Reverse Flow sells 4 in-app purchases, starting at $2.99 per month. MASD Alerting asks for nothing beyond the download.
MASD Alerting ships an update every 13 months, Reverse Flow weekly. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.
| Parameter | MASD Alerting | Reverse Flow |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (5 ratings) — better |
| Number of ratings | — | 5 — better |
| Update frequency | Every 13 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 65 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Mach Alert Inc. | DEREK ANDREW MURDOCK |
In-app purchases
MASD Alerting
No in-app purchases
Reverse Flow
- Reverse Flow Monthly Support $3$2.991 Month
- Reverse Flow Monthly Support $10$9.991 Month
- Reverse Flow One-Time Support $5$4.99
- Reverse Flow Pro$4.99
Questions
Is MASD Alerting free?
Is Reverse Flow free?
Do MASD Alerting or Reverse Flow have ads?
Which is updated more often, MASD Alerting or Reverse Flow?
Other comparisons
