# iNaturalist Classic vs Cat Tracker 2

The clearest difference is update cadence: iNaturalist Classic at every 5 weeks against Cat Tracker 2's every 27 months. iNaturalist Classic also leads on ratings volume (4.7K vs 1). Cat Tracker 2's advantage is rating (5.0 vs 4.6). 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.

Cat Tracker 2 holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: iNaturalist Classic has 4.7K ratings behind it against 1, so its average is the more settled of the two.

iNaturalist Classic ships an update every 5 weeks, Cat Tracker 2 every 27 months. The most recent releases landed on November 10, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | iNaturalist Classic | Cat Tracker 2 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (4.7K ratings)](https://appshunter.io/ios/app/inaturalist-classic/id421397028/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cat-tracker-2/id1572340472/reviews)** |
| Number of ratings | **4.7K** | 1 |
| Positive reviews | 81.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 27 months |
| Monetization | Free | Free |
| Size | 44 MB | 57 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [iNaturalist](https://appshunter.io/developer/421397031) | [AppHammer, LLC](https://appshunter.io/developer/1167531570) |

## What reviewers say

### iNaturalist Classic

[App page](https://appshunter.io/ios/app/inaturalist-classic/id421397028)

Record and identify species encounters with a simple interface. Contribute to scientific research and learn about biodiversity. Connect with other nature enthusiasts and explore the natural world.

**Highlights:** Identify species globally, Record species sightings, Contribute observations to science, Add observations to projects, Learn about biodiversity, Connect with nature enthusiasts

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

**In-app purchases:** none

**What reviewers like**

- 👍 Helpful for identifying plants, animals, and fungi
- 🤝 Supportive community of experts
- 🌱 Contributes to citizen science and research
- 🔍 Accurate identification suggestions
- 🌐 Works well globally

**What reviewers complain about**

- 🐛 Occasional crashes or bugs
- 🔍 Difficulty finding/sorting observations
- 🔒 Privacy concerns around data sharing
- 🤖 Concerns about AI/ML identification accuracy
- 💬 Negative interactions with some community members

**Reported bugs**

- Login issues or inability to create account
- Slow upload speeds or observation syncing
- Inconsistent performance between mobile and web versions

**Requested features**

- Ability to follow other users and see their observations
- More filtering and sorting options for observations
- Offline mode for taking photos and uploading later
- Easier location input for observations
- Private/personal project functionality


### Cat Tracker 2

[App page](https://appshunter.io/ios/app/cat-tracker-2/id1572340472)

This app helps researchers and enthusiasts understand the impact of domestic cats on native wildlife populations. It provides data to study cat population dynamics and their relationship with local ecosystems.

**Highlights:** Study cat population dynamics, Analyze impact on native wildlife, Data collection for research, Understand ecosystem relationships, Educational tool for conservation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iNaturalist Classic free?

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

### Is Cat Tracker 2 free?

Cat Tracker 2 is free to download, with no in-app purchases.

### Which has better reviews, iNaturalist Classic or Cat Tracker 2?

Cat Tracker 2 is rated higher. iNaturalist Classic averages 4.6 out of 5 from 4.7K ratings, while Cat Tracker 2 averages 5.0 from 1 ratings.

### Do iNaturalist Classic or Cat Tracker 2 have ads?

Neither iNaturalist Classic nor Cat Tracker 2 shows ads.

### Which is updated more often, iNaturalist Classic or Cat Tracker 2?

iNaturalist Classic ships an update every 5 weeks, and Cat Tracker 2 every 27 months. Most recently, iNaturalist Classic was updated on November 10, 2026 and Cat Tracker 2 on November 3, 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.*