# Zooniverse vs Anecdata.org

The clearest difference is rating: Anecdata.org at 5.0 against Zooniverse's 3.7. Anecdata.org also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (13.0 vs 15.1). Zooniverse's advantage is ratings volume (37 vs 4). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Anecdata.org holds the better App Store score, 5.0 against 3.7. That said, the two scores are not equally well evidenced: Zooniverse has 37 ratings behind it against 4, so its average is the more settled of the two.

Zooniverse ships an update every 2 months, Anecdata.org every 3 weeks. The most recent releases landed on September 14, 2026 and July 25, 2026 respectively.

## The numbers

| Metric | Zooniverse | Anecdata.org |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (37 ratings)](https://appshunter.io/ios/app/zooniverse/id1194130243/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/anecdataorg/id1315666791/reviews)** |
| Number of ratings | **37** | 4 |
| Positive reviews | 58.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 50 MB | 47 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Zooniverse](https://appshunter.io/developer/1851894671) | [MDI Biological Laboratory](https://appshunter.io/developer/1210127056) |

## What reviewers say

### Zooniverse

[App page](https://appshunter.io/ios/app/zooniverse/id1194130243)

Participate in real scientific research by classifying data for projects across various disciplines. Contribute to discoveries and datasets that advance knowledge, all from your mobile device. This platform connects volunteers with professional researchers for impactful citizen science.

**Highlights:** People-powered research platform, Volunteer opportunities, Access to mobile-friendly projects, Push notification updates, View publications, Contribute to scientific discoveries

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Zooniverse free?

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

### Is Anecdata.org free?

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

### Which has better reviews, Zooniverse or Anecdata.org?

Anecdata.org is rated higher. Zooniverse averages 3.7 out of 5 from 37 ratings, while Anecdata.org averages 5.0 from 4 ratings.

### Do Zooniverse or Anecdata.org have ads?

Neither Zooniverse nor Anecdata.org shows ads.

### Which is updated more often, Zooniverse or Anecdata.org?

Zooniverse ships an update every 2 months, and Anecdata.org every 3 weeks. Most recently, Zooniverse was updated on September 14, 2026 and Anecdata.org on July 25, 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.*