# uLIBRARY vs SeaKey

The clearest difference is update cadence: uLIBRARY at every 2 months against SeaKey's every 8 months. SeaKey's advantage is iOS requirement (13.0 vs 15.0). On price, rating, ratings volume and ads there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for uLIBRARY against 5.0 for SeaKey. Both are backed by a comparable volume of ratings — 2 and 1 respectively.

uLIBRARY ships an update every 2 months, SeaKey every 8 months. The most recent releases landed on October 12, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | uLIBRARY | SeaKey |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/ulibrary/id977511203/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/seakey/id6448617545/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | 16.5% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | Free |
| Size | 53 MB | 87 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Ulverscroft Group Ltd](https://appshunter.io/developer/977511202) | [Code for Nature](https://appshunter.io/developer/1829374322) |

## What reviewers say

### uLIBRARY

[App page](https://appshunter.io/ios/app/ulibrary/id977511203)

Access your library's digital collection of eAudiobooks and eBooks on your smartphone or tablet. Browse, borrow, and enjoy content for free with your library membership. Features include personalized recommendations, offline listening and reading, and customizable reading and listening experiences.

**Highlights:** Browse and borrow digital library content, Search by genre and in-depth options, eAudio and eBook previews, Personalized recommendations, Offline listening and reading, Adjustable font sizes and colors, Automatic synchronization and bookmarking

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

**In-app purchases:** none


### SeaKey

[App page](https://appshunter.io/ios/app/seakey/id6448617545)

This toolbox helps identify seaweeds found in the German North Sea. It features an interactive key for species identification and detailed taxon profiles for verification. A glossary is also included to explain scientific terms.

**Highlights:** Interactive Identification Key, Species identification, Taxon Profiles, Glossary of scientific terms, German North Sea focus

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

**In-app purchases:** none


## Frequently asked questions

### Is uLIBRARY free?

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

### Is SeaKey free?

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

### Which has better reviews, uLIBRARY or SeaKey?

uLIBRARY and SeaKey are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do uLIBRARY or SeaKey have ads?

Neither uLIBRARY nor SeaKey shows ads.

### Which is updated more often, uLIBRARY or SeaKey?

uLIBRARY ships an update every 2 months, and SeaKey every 8 months. Most recently, uLIBRARY was updated on October 12, 2026 and SeaKey on September 29, 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.*