# iNaturalist vs Grindstone

The clearest difference is chart position: iNaturalist at #78 against Grindstone's unranked. iNaturalist also leads on iOS requirement (15.1 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

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

## The numbers

| Metric | iNaturalist | Grindstone |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (684 ratings)](https://appshunter.io/ios/app/inaturalist/id6475737561/reviews)** | — |
| Number of ratings | **684** | — |
| Positive reviews | 48.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free | — |
| Best chart rank | **#78** | — |
| Size | 220 MB | 1 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [iNaturalist](https://appshunter.io/developer/421397031) | [MARGAUX SJAAN HAYES](https://appshunter.io/developer/6809380462) |

## What reviewers say

### iNaturalist

[App page](https://appshunter.io/ios/app/inaturalist/id6475737561)

**Currently charting:** #78 Top Free · Education (US App Store)

Identify plants, animals, and fungi using your camera or imported photos. Get AI-powered species suggestions and connect with a global community of nature enthusiasts to learn more about the natural world and contribute to scientific conservation efforts.

**Highlights:** AI species identification, Record species observations, Contribute to scientific data, Explore biodiversity, Connect with nature enthusiasts

**In-app purchases:** none

**What reviewers like**

- 🚀 Faster and more intuitive UI
- 👍 Improved features from website
- 💡 Batch upload and sorting options
- 🚀 Responsive and smooth performance
- 👍 Easier to navigate and use

**What reviewers complain about**

- 🐛 Bugs with observation time and location
- 🔍 Difficulty finding advanced editing options
- 🔍 Overly complex UI for basic tasks
- 🔍 Removal of useful features like map view
- 🔍 Too much reliance on AI identification

**Reported bugs**

- App freezes when suggesting IDs on audio clips
- Inconsistent tap responsiveness in search menu
- Observation time not accurately filling based on upload time
- Map showing incorrect observation locations
- Crashes and performance issues on some devices

**Requested features**

- Ability to type in address/coordinates for location
- Option to add observations to projects during upload
- Batch editing/uploading of observations
- More precise search filters (e.g. aquatic, parasitic, migratory)
- Bring back colored observation markers on map


### Grindstone

[App page](https://appshunter.io/ios/app/grindstone/id6809380460)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iNaturalist free?

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

### Is Grindstone free?

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

### Do iNaturalist or Grindstone have ads?

Neither iNaturalist nor Grindstone shows ads.

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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.*