# OLSAT Trainer Pro vs Environmental Engineering Quiz

The clearest difference is price: Environmental Engineering Quiz at Free against OLSAT Trainer Pro's $9.99. Environmental Engineering Quiz also leads on ratings volume (3 vs 1). OLSAT Trainer Pro's advantage is in-app purchases (none vs 6) and iOS requirement (12.0 vs 17.0). On rating, update cadence, ads and device support there is nothing between them.

Environmental Engineering Quiz is free to download; OLSAT Trainer Pro costs $9.99 up front. Environmental Engineering Quiz sells 6 in-app purchases, starting at $9.99 per month. OLSAT Trainer Pro asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for OLSAT Trainer Pro against 5.0 for Environmental Engineering Quiz. Both are backed by a comparable volume of ratings — 1 and 3 respectively.

OLSAT Trainer Pro ships an update every 2 months, Environmental Engineering Quiz every 3 months. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | OLSAT Trainer Pro | Environmental Engineering Quiz |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/olsat-trainer-pro/id1607687989/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/environmental-engineering-quiz/id6739960303/reviews) |
| Number of ratings | 1 | **3** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 75 MB | 23 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Polemics Applications LLC](https://appshunter.io/developer/482504032) | [Forwa Elade Wunde](https://appshunter.io/developer/1685241344) |

## What reviewers say

### OLSAT Trainer Pro

[App page](https://appshunter.io/ios/app/olsat-trainer-pro/id1607687989)

Prepare for gifted and talented tests with this comprehensive training app. It enhances reasoning and problem-solving skills for students in Kindergarten through sixth grade, covering all OLSAT test levels and question types with adaptive quizzes and detailed explanations.

**Highlights:** Comprehensive OLSAT test preparation, Covers all 15 essential OLSAT areas, Adaptive quizzes with immediate feedback, Detailed answer explanations, Progress tracking system, Full-color graphics, Tips and methods for question categories

**Features:** macOS Compatibility

**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 OLSAT Trainer Pro free?

OLSAT Trainer Pro costs $9.99, with no in-app purchases.

### Is Environmental Engineering Quiz free?

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

### Which has better reviews, OLSAT Trainer Pro or Environmental Engineering Quiz?

OLSAT Trainer Pro and Environmental Engineering Quiz are both rated 5.0 out of 5 on the App Store, from 1 and 3 ratings respectively.

### Do OLSAT Trainer Pro or Environmental Engineering Quiz have ads?

Neither OLSAT Trainer Pro nor Environmental Engineering Quiz shows ads.

### Which is updated more often, OLSAT Trainer Pro or Environmental Engineering Quiz?

OLSAT Trainer Pro ships an update every 2 months, and Environmental Engineering Quiz every 3 months. Most recently, OLSAT Trainer Pro was updated on October 24, 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.*