# Fire Pump Operator vs Customthings

The clearest difference is in-app purchases: Customthings at none against Fire Pump Operator's 2. Fire Pump Operator's advantage is update cadence (every 2 days vs every 2 months) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Fire Pump Operator sells 2 in-app purchases, starting at $1.99 per month. Customthings asks for nothing beyond the download.

Fire Pump Operator ships an update every 2 days, Customthings every 2 months. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Fire Pump Operator | Customthings |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/customthings/id6738079579/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 48 MB | 485 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Digital Training Systems Incorporated](https://appshunter.io/developer/320642446) | [Makeblock Co., Ltd.](https://appshunter.io/developer/1002364464) |

## What reviewers say

### Fire Pump Operator

[App page](https://appshunter.io/ios/app/fire-pump-operator/id1044180312)

This app assists fire pump operators in calculating engine pressure using a standard formula. It allows for the addition of multiple friction losses, appliances, and elevations, and offers the ability to save and modify entries. Users can also adjust default coefficients and access other relevant calculators.

**Highlights:** Engine Pressure calculation, Add friction losses, appliances, elevations, Save and modify entries, Adjust IFSTA coefficients, Head Pressure calculator, NFA Formula calculator

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fire Pump Operator Pro | $1.99 | per month |
| Fire Pump Operator Pro | $19.99 | per year |


### Customthings

[App page](https://appshunter.io/ios/app/customthings/id6738079579)

This app allows customers to personalize products and submit orders directly from interactive screens in stores or at events. It offers preset templates and freehand design options for a tailored experience. The app ensures efficient order processing and allows offline tracking for timely fulfillment.

**Highlights:** Product selection, Design customization, Preset templates, Hand-drawn customization, Rapid order submission, Offline order tracking

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Fire Pump Operator free?

Fire Pump Operator is free to download, with in-app purchases available.

### Is Customthings free?

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

### Do Fire Pump Operator or Customthings have ads?

Neither Fire Pump Operator nor Customthings shows ads.

### Which is updated more often, Fire Pump Operator or Customthings?

Fire Pump Operator ships an update every 2 days, and Customthings every 2 months. Most recently, Fire Pump Operator was updated on October 7, 2026 and Customthings on October 4, 2026.

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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.*