# AP Environmental Science vs AP Calculus AB Exam Study Prep

The clearest difference is rating: AP Environmental Science at 4.4 against AP Calculus AB Exam Study Prep's 3.3. AP Environmental Science also leads on ads (none vs shown). AP Calculus AB Exam Study Prep's advantage is in-app purchases (none vs 4) and review sentiment (50% vs 33%). On price, ratings volume, update cadence and device support there is nothing between them.

Both are free to download. AP Environmental Science sells 4 in-app purchases, starting at $6.99 per 7 days. AP Calculus AB Exam Study Prep asks for nothing beyond the download.

AP Environmental Science holds the better App Store score, 4.4 against 3.3. Both are backed by a comparable volume of ratings — 7 and 3 respectively. Written reviews complicate that: 33% of AP Environmental Science's written reviews are positive against 50% of AP Calculus AB Exam Study Prep's, so the app with the better star average is not the one people write more warmly about.

AP Environmental Science ships an update every 6 months, AP Calculus AB Exam Study Prep every 5 months. The most recent releases landed on November 3, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | AP Environmental Science | AP Calculus AB Exam Study Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/ap-environmental-science/id1514861166/reviews)** | [3.3 (3 ratings)](https://appshunter.io/ios/app/ap-calculus-ab-exam-study-prep/id1645116125/reviews) |
| Number of ratings | **7** | 3 |
| Positive reviews | 33.3% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 6 months | **Every 5 months** |
| Monetization | Freemium | **Ad-supported** |
| Size | 29 MB | 8 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Expanded Apps](https://appshunter.io/developer/313709778) | [Golden Mind Services LTD](https://appshunter.io/developer/417614614) |

## What reviewers say

### AP Environmental Science

[App page](https://appshunter.io/ios/app/ap-environmental-science/id1514861166)

Prepare for your AP Environmental Science exam with 500 practice questions covering all topics. Utilize study, timed exam, and bookmark modes to track progress and review effectively. Access all content with a subscription.

**Highlights:** 500 AP-style practice questions, Concise answer explanations, Study, Timed Exam, and Bookmark modes, Progress tracking, iCloud save functionality, Interactive features

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $6.99 | per 7 days |
| 1 Month | $17.99 | per month |
| 1 Year | $69.99 | per year |
| AP Environmental Science | $15.99 | one-time |


### AP Calculus AB Exam Study Prep

[App page](https://appshunter.io/ios/app/ap-calculus-ab-exam-study-prep/id1645116125)

Prepare for the AP Calculus AB exam with this comprehensive practice guide. It offers over 500 questions, offline access, and progress tracking features to help you study effectively. Review answers and focus on areas needing improvement.

**Highlights:** Over 500 practice questions, Offline access, Answer review, Progress tracking, Targeted practice on incorrect answers, Customizable quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AP Environmental Science free?

AP Environmental Science is free to download, with in-app purchases available.

### Is AP Calculus AB Exam Study Prep free?

AP Calculus AB Exam Study Prep is free to download, with no in-app purchases.

### Which has better reviews, AP Environmental Science or AP Calculus AB Exam Study Prep?

AP Environmental Science is rated higher. AP Environmental Science averages 4.4 out of 5 from 7 ratings, while AP Calculus AB Exam Study Prep averages 3.3 from 3 ratings.

### Do AP Environmental Science or AP Calculus AB Exam Study Prep have ads?

AP Calculus AB Exam Study Prep shows ads; AP Environmental Science does not.

### Which is updated more often, AP Environmental Science or AP Calculus AB Exam Study Prep?

AP Environmental Science ships an update every 6 months, and AP Calculus AB Exam Study Prep every 5 months. Most recently, AP Environmental Science was updated on November 3, 2026 and AP Calculus AB Exam Study Prep on November 7, 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.*