# AlgaID vs Sea Shell Identifier

The clearest difference is update cadence: AlgaID at monthly against Sea Shell Identifier's every 2 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AlgaID sells 2 in-app purchases, starting at $8.90 per month and Sea Shell Identifier sells 2 in-app purchases, starting at $2.99 per 7 days. Whichever you choose, the download price is not the number that matters.

AlgaID ships an update monthly, Sea Shell Identifier every 2 months. The most recent releases landed on September 8, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | AlgaID | Sea Shell Identifier |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Monthly** | Every 2 months |
| Size | 41 MB | 16 MB |
| Requires iOS | **15.1** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bydas, Agência de Comunicação Digital Unipessoal Limitada](https://appshunter.io/developer/1809947785) | [EBUZER SIMSEK](https://appshunter.io/developer/1708825740) |

## What reviewers say

### AlgaID

[App page](https://appshunter.io/ios/app/algaid/id6744921018)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AlgaID Premium | $8.90 | per month |
| AlgaID Premium | $79.99 | per year |


### 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 |


## Frequently asked questions

### Is AlgaID free?

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

### Is Sea Shell Identifier free?

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

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

Neither AlgaID nor Sea Shell Identifier shows ads.

### Which is updated more often, AlgaID or Sea Shell Identifier?

AlgaID ships an update monthly, and Sea Shell Identifier every 2 months. Most recently, AlgaID was updated on September 8, 2026 and Sea Shell Identifier on September 14, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*