# Public Safety Dive Calculator vs EMT Prep Practice Test

The clearest difference is price: Public Safety Dive Calculator at Free against EMT Prep Practice Test's $1.99. Public Safety Dive Calculator also leads on update cadence (every 3 months vs every 58 months). EMT Prep Practice Test's advantage is device support (3 vs 1) and iOS requirement (11.0 vs 16.6). On ads and in-app purchases there is nothing between them.

Public Safety Dive Calculator is free to download; EMT Prep Practice Test costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Public Safety Dive Calculator ships an update every 3 months, EMT Prep Practice Test every 58 months. The most recent releases landed on November 1, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Public Safety Dive Calculator | EMT Prep Practice Test |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[2.3 (4 ratings)](https://appshunter.io/ios/app/public-safety-dive-calculator/id573040352/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 58 months |
| Monetization | Free | — |
| Size | 3 MB | 10 MB |
| Requires iOS | 16.6 | **11.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Public Safety Dive Supply LLC](https://appshunter.io/developer/541313809) | [Nurten PIRLI](https://appshunter.io/developer/1495958705) |

## What reviewers say

### Public Safety Dive Calculator

[App page](https://appshunter.io/ios/app/public-safety-dive-calculator/id573040352)

This app provides a quick and reliable toolkit for public safety dive teams to calculate essential dive planning values. It includes calculators for gas partial pressure, consumption, surface air consumption, tank factor, tank volume, and maximum operating depth. Designed for speed and clarity in field use, it serves as an educational aid for divers, supervisors, and instructors.

**Highlights:** Gas Partial Pressure (PP) calculator, Gas Consumption calculator, Surface Air Consumption (SAC) calculator, Tank Factor calculator, Tank Volume calculator, Maximum Operating Depth (MOD) calculator, Quick inputs and easy-to-read output

**Features:** macOS Compatibility

**In-app purchases:** none


### EMT Prep Practice Test

[App page](https://appshunter.io/ios/app/emt-prep-practice-test/id1554463470)

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

**In-app purchases:** none


## Frequently asked questions

### Is Public Safety Dive Calculator free?

Public Safety Dive Calculator is free to download, with no in-app purchases.

### Is EMT Prep Practice Test free?

EMT Prep Practice Test costs $1.99, with no in-app purchases.

### Do Public Safety Dive Calculator or EMT Prep Practice Test have ads?

Neither Public Safety Dive Calculator nor EMT Prep Practice Test shows ads.

### Which is updated more often, Public Safety Dive Calculator or EMT Prep Practice Test?

Public Safety Dive Calculator ships an update every 3 months, and EMT Prep Practice Test every 58 months. Most recently, Public Safety Dive Calculator was updated on November 1, 2026 and EMT Prep Practice Test on October 25, 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.*