# Learning US History vs Environmental Engineering PRO

The clearest difference is update cadence: Environmental Engineering PRO at every 5 months against Learning US History's every 47 months. Environmental Engineering PRO also leads on price ($0.49 vs $1.99). Learning US History's advantage is iOS requirement (11.0 vs 13.0). On ads, in-app purchases and device support there is nothing between them.

Learning US History costs $1.99 and Environmental Engineering PRO $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

Learning US History ships an update every 47 months, Environmental Engineering PRO every 5 months. The most recent releases landed on November 2, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Learning US History | Environmental Engineering PRO |
| --- | --- | --- |
| Price | $1.99 | **$0.49** |
| Rating | **[2.0 (2 ratings)](https://appshunter.io/ios/app/learning-us-history/id1364473623/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 47 months | **Every 5 months** |
| Monetization | Paid | — |
| Size | 25 MB | 23 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Coskun CAKIR](https://appshunter.io/developer/482066275) | [Manish Kumar](https://appshunter.io/developer/1854995154) |

## What reviewers say

### Learning US History

[App page](https://appshunter.io/ios/app/learning-us-history/id1364473623)

Practice and test your knowledge of U.S. history with quizzes and flashcards covering major time periods. Access all content offline on any device after downloading.

**Highlights:** Diagnostic and practice quizzes, Answer explanations, Flashcard study mode, Offline access, Detailed performance tracking, Covers 21 major US history periods

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

**In-app purchases:** none


### Environmental Engineering PRO

[App page](https://appshunter.io/ios/app/environmental-engineering-pro/id6759217834)

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

**In-app purchases:** none


## Frequently asked questions

### Is Learning US History free?

Learning US History costs $1.99, with no in-app purchases.

### Is Environmental Engineering PRO free?

Environmental Engineering PRO costs $0.49, with no in-app purchases.

### Do Learning US History or Environmental Engineering PRO have ads?

Neither Learning US History nor Environmental Engineering PRO shows ads.

### Which is updated more often, Learning US History or Environmental Engineering PRO?

Learning US History ships an update every 47 months, and Environmental Engineering PRO every 5 months. Most recently, Learning US History was updated on November 2, 2026 and Environmental Engineering PRO on November 5, 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.*