# CitSci vs Mushroom Identifier

The clearest difference is in-app purchases: CitSci at none against Mushroom Identifier's 2. CitSci also leads on update cadence (every 6 weeks vs every 4 months) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Mushroom Identifier sells 2 in-app purchases, starting at $2.99 per 7 days. CitSci asks for nothing beyond the download.

CitSci ships an update every 6 weeks, Mushroom Identifier every 4 months. The most recent releases landed on September 10, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | CitSci | Mushroom Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/citsci/id657196305/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 33 MB | 3 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Greg Newman](https://appshunter.io/developer/1536428997) | [ProductShake, LLC](https://appshunter.io/developer/1835019546) |

## 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


### Mushroom Identifier

[App page](https://appshunter.io/ios/app/mushroom-identifier-smart-id/id6757123772)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Annual | $29.99 | per year |


## Frequently asked questions

### Is CitSci free?

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

### Is Mushroom Identifier free?

Mushroom Identifier is free to download, with in-app purchases available.

### Do CitSci or Mushroom Identifier have ads?

Neither CitSci nor Mushroom Identifier shows ads.

### Which is updated more often, CitSci or Mushroom Identifier?

CitSci ships an update every 6 weeks, and Mushroom Identifier every 4 months. Most recently, CitSci was updated on September 10, 2026 and Mushroom Identifier on September 13, 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.*