# DO Calcs Buddy vs PumpOperator

The clearest difference is price: DO Calcs Buddy at Free against PumpOperator's $1.99. PumpOperator's advantage is chart position (#169 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

DO Calcs Buddy is free to download; PumpOperator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | DO Calcs Buddy | PumpOperator |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/do-calcs-buddy/id6749918102/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free | — |
| Best chart rank | — | **#169** |
| Size | 71 MB | 25 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Max McCoy](https://appshunter.io/developer/1832824815) | [Daniel T Stuart](https://appshunter.io/developer/1861329369) |

## What reviewers say

### DO Calcs Buddy

[App page](https://appshunter.io/ios/app/do-calcs-buddy/id6749918102)

This app helps firefighters and engineers perform hoseline calculations for training and certification. It offers customizable settings for specific departments and includes interactive study modes for various pump operator topics. The tool is designed for offline use and provides quick reference field topics.

**Highlights:** Hoseline Calculator with custom segments, Friction loss, PDP, GPM, Nozzle Reaction, Customizable hose and nozzle settings, Interactive study mode with randomized questions, Offline functionality, Quick reference field topics

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

**In-app purchases:** none


### PumpOperator

[App page](https://appshunter.io/ios/app/pumpoperator/id6774379177)

**Currently charting:** #169 Top Paid · Education (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is DO Calcs Buddy free?

DO Calcs Buddy is free to download, with no in-app purchases.

### Is PumpOperator free?

PumpOperator costs $1.99, with no in-app purchases.

### Do DO Calcs Buddy or PumpOperator have ads?

Neither DO Calcs Buddy nor PumpOperator 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.*