# SHO vs Reverse Flow

The clearest difference is rating: Reverse Flow at 5.0 against SHO's 4.2. Reverse Flow also leads on update cadence (weekly vs every 2 months). SHO's advantage is in-app purchases (none vs 4). On price, ratings volume, ads and monetization model there is nothing between them.

Both are free to download. Reverse Flow sells 4 in-app purchases, starting at $2.99 per month. SHO asks for nothing beyond the download.

Reverse Flow holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 12 and 5 respectively.

SHO ships an update every 2 months, Reverse Flow weekly. The most recent releases landed on June 2, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | SHO | Reverse Flow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (12 ratings)](https://appshunter.io/ios/app/sho-flow/id1447418345/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/reverse-flow-fire-hydraulics/id6775030535/reviews)** |
| Number of ratings | **12** | 5 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | Free |
| Size | 145 MB | 8 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Task Force Tips](https://appshunter.io/developer/1447418344) | [DEREK ANDREW MURDOCK](https://appshunter.io/developer/6775030537) |

## What reviewers say

### SHO

[App page](https://appshunter.io/ios/app/sho-flow/id1447418345)

This app assists firefighters in calculating water flow rates, pump discharge pressures, and nozzle reactions. It can be used with a Bluetooth flow meter or as a standalone calculator with established fire flow formulas. Educational videos on water flow are also included.

**Highlights:** Calculate fire hose flow rates, Determine pump discharge pressures, Calculate nozzle reaction, Perform NFPA 1962 nozzle flow tests, Standalone water flow calculator, Water flow education videos

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 SHO free?

SHO is free to download, with no in-app purchases.

### Is Reverse Flow free?

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

### Which has better reviews, SHO or Reverse Flow?

Reverse Flow is rated higher. SHO averages 4.2 out of 5 from 12 ratings, while Reverse Flow averages 5.0 from 5 ratings.

### Do SHO or Reverse Flow have ads?

Neither SHO nor Reverse Flow shows ads.

### Which is updated more often, SHO or Reverse Flow?

SHO ships an update every 2 months, and Reverse Flow weekly. Most recently, SHO was updated on June 2, 2026 and Reverse Flow on September 14, 2026.

---

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