# Sensor Simulator vs IFSTA HazMat Technician 3

The clearest difference is in-app purchases: Sensor Simulator at none against IFSTA HazMat Technician 3's 2. Sensor Simulator also leads on update cadence (every 2 months vs every 5 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. IFSTA HazMat Technician 3 sells 2 one-off in-app purchases. Sensor Simulator asks for nothing beyond the download.

Sensor Simulator ships an update every 2 months, IFSTA HazMat Technician 3 every 5 months. The most recent releases landed on September 18, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Sensor Simulator | IFSTA HazMat Technician 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ifsta-hazmat-technician-3/id6472701776/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 5 months |
| Monetization | — | Freemium |
| Size | 6 MB | 248 MB |
| Requires iOS | **14.2** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Cell Podium, LLC](https://appshunter.io/developer/1681323576) | [IFSTA](https://appshunter.io/developer/495289396) |

## What reviewers say

### Sensor Simulator

[App page](https://appshunter.io/ios/app/sensor-simulator/id6447448264)

**In-app purchases:** none


### IFSTA HazMat Technician 3

[App page](https://appshunter.io/ios/app/ifsta-hazmat-technician-3/id6472701776)

This educational app supports the Hazardous Materials Technician, 3rd Edition Manual. It offers flashcards, exam preparation, an audiobook, and container identification quizzes to help emergency responders prepare for certification.

**Highlights:** Flashcards for key terms and definitions, Exam prep questions with progress tracking, Audiobook narration of all chapters, Container identification quizzes, Offline access for audiobook

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all Exam Prep Chapters | $14.99 | one-time |
| Audiobook | $29.99 | one-time |


## Frequently asked questions

### Is Sensor Simulator free?

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

### Is IFSTA HazMat Technician 3 free?

IFSTA HazMat Technician 3 is free to download, with in-app purchases available.

### Do Sensor Simulator or IFSTA HazMat Technician 3 have ads?

Neither Sensor Simulator nor IFSTA HazMat Technician 3 shows ads.

### Which is updated more often, Sensor Simulator or IFSTA HazMat Technician 3?

Sensor Simulator ships an update every 2 months, and IFSTA HazMat Technician 3 every 5 months. Most recently, Sensor Simulator was updated on September 18, 2026 and IFSTA HazMat Technician 3 on September 20, 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.*