# Sea Shell Identifier vs ShellsBook

The clearest difference is iOS requirement: Sea Shell Identifier at 16.0 against ShellsBook's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Sea Shell Identifier sells 2 in-app purchases, starting at $2.99 per 7 days and ShellsBook sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Sea Shell Identifier | ShellsBook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 16 MB | 1 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [EBUZER SIMSEK](https://appshunter.io/developer/1708825740) | [Mitaanshu Agarwal](https://appshunter.io/developer/1896724075) |

## What reviewers say

### Sea Shell Identifier

[App page](https://appshunter.io/ios/app/sea-shell-identifier-shelltag/id6758572237)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $2.99 | per 7 days |
| Premium Yearly | $24.99 | per year |


### ShellsBook

[App page](https://appshunter.io/ios/app/shellsbook/id6773482243)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShellsBook Pro Monthly | $4.99 | per month |
| ShellsBook Pro Yearly | $24.90 | per year |


## Frequently asked questions

### Is Sea Shell Identifier free?

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

### Is ShellsBook free?

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

### Do Sea Shell Identifier or ShellsBook have ads?

Neither Sea Shell Identifier nor ShellsBook 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.*