# NJCT vs Environmental Engineering Quiz

The clearest difference is in-app purchases: NJCT at none against Environmental Engineering Quiz's 6. NJCT also leads on iOS requirement (11.0 vs 17.0). Environmental Engineering Quiz's advantage is update cadence (every 3 months vs every 30 months). On price, ads and device support there is nothing between them.

Both are free to download. Environmental Engineering Quiz sells 6 in-app purchases, starting at $9.99 per month. NJCT asks for nothing beyond the download.

NJCT ships an update every 30 months, Environmental Engineering Quiz every 3 months. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | NJCT | Environmental Engineering Quiz |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/environmental-engineering-quiz/id6739960303/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 30 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 33 MB | 23 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NJ Technologies](https://appshunter.io/developer/592382047) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### NJCT

[App page](https://appshunter.io/ios/app/njct-open-learning-resource/id1459989408)

**Features:** Vision Pro support

**In-app purchases:** none


### Environmental Engineering Quiz

[App page](https://appshunter.io/ios/app/environmental-engineering-quiz/id6739960303)

Master environmental engineering concepts with engaging quizzes covering wastewater treatment, air pollution, and more. Features timed challenges, practice modes, detailed analytics, and offline access. Ideal for students and professionals seeking to enhance their knowledge.

**Highlights:** Comprehensive topic coverage, Expert-designed challenging questions, Real-time feedback and explanations, Multiple quiz modes, Detailed progress analytics, Offline access

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Month | $9.99 | per month |
| 6 Months | $19.99 | per 6 months |
| 1 Year | $29.99 | per year |
| 1500 | $0.99 | one-time |
| 3500 | $1.99 | one-time |
| 9000 | $3.99 | one-time |


## Frequently asked questions

### Is NJCT free?

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

### Is Environmental Engineering Quiz free?

Environmental Engineering Quiz is free to download, with in-app purchases available.

### Do NJCT or Environmental Engineering Quiz have ads?

Neither NJCT nor Environmental Engineering Quiz shows ads.

### Which is updated more often, NJCT or Environmental Engineering Quiz?

NJCT ships an update every 30 months, and Environmental Engineering Quiz every 3 months. Most recently, NJCT was updated on October 7, 2026 and Environmental Engineering Quiz on October 21, 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.*