# FD Pump Ops vs Reverse Flow

The clearest difference is monetization model: Reverse Flow at free against FD Pump Ops's paid. Reverse Flow also leads on ratings volume (5 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. FD Pump Ops sells 1 one-off in-app purchase and Reverse Flow sells 4 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 5.0 for FD Pump Ops 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.

## The numbers

| Metric | FD Pump Ops | Reverse Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/fd-pump-ops/id6756896165/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/reverse-flow-fire-hydraulics/id6775030535/reviews) |
| Number of ratings | 1 | **5** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | — | Weekly |
| Monetization | Paid | **Free** |
| Size | 52 MB | 8 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Paul Brewer](https://appshunter.io/developer/1833718234) | [DEREK ANDREW MURDOCK](https://appshunter.io/developer/6775030537) |

## What reviewers say

### FD Pump Ops

[App page](https://appshunter.io/ios/app/fd-pump-ops/id6756896165)

This comprehensive fireground operating system provides firefighters with essential tools for pump operations, fire flow estimation, relay pumping, wildland incidents, and company officer decision-making. It offers a distraction-free, offline-capable interface designed for high-stress environments, replacing traditional reference materials with digital confidence.

**Highlights:** Pump discharge pressure calculations, Friction loss for various lines, Fire flow estimation methods, Relay pumping calculations, Wildland fire tools, Company officer decision support, Offline functionality

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


### Reverse Flow

[App page](https://appshunter.io/ios/app/reverse-flow-fire-hydraulics/id6775030535)

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.

**Highlights:** Reverse Flow calculations, Required PDP calculations, Relay Pumping calculations, Split Lay analysis, Pump Chart storage, Nozzle support, Custom hose coefficients

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reverse Flow Monthly Support $3 | $2.99 | per month |
| Reverse Flow Monthly Support $10 | $9.99 | per month |
| Reverse Flow One-Time Support $5 | $4.99 | one-time |
| Reverse Flow Pro | $4.99 | one-time |


## Frequently asked questions

### Is FD Pump Ops free?

FD Pump Ops is free to download, with in-app purchases available.

### Is Reverse Flow free?

Reverse Flow is free to download, with in-app purchases available.

### Which has better reviews, FD Pump Ops or Reverse Flow?

FD Pump Ops and Reverse Flow are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do FD Pump Ops or Reverse Flow have ads?

Neither FD Pump Ops nor Reverse Flow shows ads.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*