# Duke School vs Shell Identifier

The clearest difference is rating: Duke School at 5.0 against Shell Identifier's 2.6. Duke School also leads on in-app purchases (none vs 4) and update cadence (every 2 months vs every 7 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Shell Identifier sells 4 in-app purchases, starting at $4.99 per 7 days. Duke School asks for nothing beyond the download.

Duke School holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 4 and 5 respectively.

Duke School ships an update every 2 months, Shell Identifier every 7 months. The most recent releases landed on October 23, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Duke School | Shell Identifier |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (4 ratings)](https://appshunter.io/ios/app/duke-school/id1247681957/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/shell-identifier-ai-scanner/id6670417306/reviews) |
| Number of ratings | 4 | **5** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 7 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 51 MB | 49 MB |
| Requires iOS | **14.0** | 17.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Duke School](https://appshunter.io/developer/1479428977) | [VIET NAM JINGLE SOFTWARE](https://appshunter.io/developer/1541994427) |

## What reviewers say

### Duke School

[App page](https://appshunter.io/ios/app/duke-school/id1247681957)

This app centralizes essential information for parents, students, and faculty, offering easy mobile access to news, events, photos, and contact directories. Users can browse content, filter for relevance, and directly email constituents.

**Highlights:** News and announcements, Photo and document browsing, Calendar events with filtering, Constituent directory access, Direct email functionality, Content filtering and preference saving

**Features:** macOS Compatibility

**In-app purchases:** none


### Shell Identifier

[App page](https://appshunter.io/ios/app/shell-identifier-ai-scanner/id6670417306)

Identify snails, slugs, oysters, clams, and squid by taking a photo of them or their shells. Discover the name and species of various mollusks with this AI-powered tool.

**Highlights:** AI-powered identification, Identify snails and shells, Classify slugs, oysters, clams, squid, Photo-based recognition, Species and name discovery

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shell identify pro weekly | $4.99 | per 7 days |
| Shell identify pro monthly | $9.99 | per month |
| Shell identify pro yearly | $29.99 | per year |
| Shell identify pro lifetime | $99.99 | one-time |


## Frequently asked questions

### Is Duke School free?

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

### Is Shell Identifier free?

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

### Which has better reviews, Duke School or Shell Identifier?

Duke School is rated higher. Duke School averages 5.0 out of 5 from 4 ratings, while Shell Identifier averages 2.6 from 5 ratings.

### Do Duke School or Shell Identifier have ads?

Neither Duke School nor Shell Identifier shows ads.

### Which is updated more often, Duke School or Shell Identifier?

Duke School ships an update every 2 months, and Shell Identifier every 7 months. Most recently, Duke School was updated on October 23, 2026 and Shell Identifier on October 2, 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.*