# CitSci vs WA Invasives

The clearest difference is rating: WA Invasives at 4.8 against CitSci's 4.5. WA Invasives also leads on ratings volume (66 vs 2). CitSci's advantage is update cadence (every 6 weeks vs every 3 months) and iOS requirement (15.0 vs 18.6). 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.

WA Invasives holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: WA Invasives has 66 ratings behind it against 2, so its average is the more settled of the two.

CitSci ships an update every 6 weeks, WA Invasives every 3 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | CitSci | WA Invasives |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/citsci/id657196305/reviews) | **[4.8 (66 ratings)](https://appshunter.io/ios/app/wa-invasives/id826772026/reviews)** |
| Number of ratings | 2 | **66** |
| Positive reviews | — | 26.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Monetization | Free | Free |
| Size | 33 MB | 29 MB |
| Requires iOS | **15.0** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Greg Newman](https://appshunter.io/developer/1536428997) | [Charles T. Bargeron](https://appshunter.io/developer/381326173) |

## What reviewers say

### CitSci

[App page](https://appshunter.io/ios/app/citsci/id657196305)

Empower your community with a tool for collecting and uploading scientific observations. This app facilitates citizen science projects, allowing users to contribute valuable data directly to a central platform.

**Highlights:** Data collection for citizen science, Upload observations to CitSci.org, Empowers community science projects, Syncs with web platform, Facilitates observation contribution

**Features:** macOS Compatibility

**In-app purchases:** none


### WA Invasives

[App page](https://appshunter.io/ios/app/wa-invasives/id826772026)

Easily identify and report invasive species in Washington State. Contribute to conservation efforts by submitting sightings with GPS and photos. Learn about priority species and view confirmed reports on a dynamic map.

**Highlights:** GPS and photo reporting, Offline sighting caching, Species identification information, View confirmed sighting maps, Submit reports to WISC

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

**In-app purchases:** none


## Frequently asked questions

### Is CitSci free?

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

### Is WA Invasives free?

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

### Which has better reviews, CitSci or WA Invasives?

WA Invasives is rated higher. CitSci averages 4.5 out of 5 from 2 ratings, while WA Invasives averages 4.8 from 66 ratings.

### Do CitSci or WA Invasives have ads?

Neither CitSci nor WA Invasives shows ads.

### Which is updated more often, CitSci or WA Invasives?

CitSci ships an update every 6 weeks, and WA Invasives every 3 months. Most recently, CitSci was updated on November 1, 2026 and WA Invasives on November 1, 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.*