# Anecdata.org vs AP Environmental Science

The clearest difference is rating: Anecdata.org at 5.0 against AP Environmental Science's 4.4. Anecdata.org also leads on in-app purchases (none vs 7) and update cadence (every 3 weeks vs every 6 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. AP Environmental Science sells 7 in-app purchases, starting at $5.99 per 7 days. Anecdata.org asks for nothing beyond the download.

Anecdata.org holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 4 and 7 respectively.

Anecdata.org ships an update every 3 weeks, AP Environmental Science every 6 months. The most recent releases landed on October 9, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Anecdata.org | AP Environmental Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/anecdataorg/id1315666791/reviews)** | [4.4 (7 ratings)](https://appshunter.io/ios/app/ap-environmental-science/id1514861166/reviews) |
| Number of ratings | 4 | **7** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 6 months |
| Monetization | **Free** | Freemium |
| Size | 47 MB | 29 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [MDI Biological Laboratory](https://appshunter.io/developer/1210127056) | [Expanded Apps](https://appshunter.io/developer/313709778) |

## What reviewers say

### Anecdata.org

[App page](https://appshunter.io/ios/app/anecdataorg/id1315666791)

This platform empowers users to create, manage, and participate in citizen science projects. It facilitates data collection in the field, even offline, and supports project analysis and download.

**Highlights:** Project creation and management, Datasheet design, Participant invitation, Offline data collection, Data download and analysis

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

**In-app purchases:** none


### 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 (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 Week | $5.99 | per 7 days |
| 1 Week | $6.99 | per 7 days |
| 1 Month | $17.99 | per month |
| 3 Month Subscription Plan | $39.99 | per 3 months |
| 1 Year | $69.99 | per year |
| Annual Subscription Plan | $99.99 | per year |
| AP Environmental Science | $15.99 | one-time |


## Frequently asked questions

### Is Anecdata.org free?

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

### Is AP Environmental Science free?

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

### Which has better reviews, Anecdata.org or AP Environmental Science?

Anecdata.org is rated higher. Anecdata.org averages 5.0 out of 5 from 4 ratings, while AP Environmental Science averages 4.4 from 7 ratings.

### Do Anecdata.org or AP Environmental Science have ads?

Neither Anecdata.org nor AP Environmental Science shows ads.

### Which is updated more often, Anecdata.org or AP Environmental Science?

Anecdata.org ships an update every 3 weeks, and AP Environmental Science every 6 months. Most recently, Anecdata.org was updated on October 9, 2026 and AP Environmental Science on October 15, 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.*