# OPAC SBN vs SBN UBO

The clearest difference is update cadence: OPAC SBN at every 9 days against SBN UBO's every 3 months. OPAC SBN also leads on iOS requirement (8.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

OPAC SBN ships an update every 9 days, SBN UBO every 3 months. The most recent releases landed on August 23, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | OPAC SBN | SBN UBO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (4 ratings)](https://appshunter.io/ios/app/sbn-ubo/id938696113/reviews)** |
| Number of ratings | — | **4** |
| Positive reviews | 36.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 3 months |
| Monetization | Free | Free |
| Size | 7 MB | 82 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Inera Srl](https://appshunter.io/developer/786155258) | [DOT BEYOND SRL](https://appshunter.io/developer/1384557126) |

## What reviewers say

### OPAC SBN

[App page](https://appshunter.io/ios/app/opac-sbn/id786155255)

Access the National Library Service catalog to find books, music, and more. Search by various criteria, view document details, and locate owning libraries. Save favorites and share information.

**Highlights:** Search catalog by various criteria, Locate owning libraries, View document details and covers, Save favorites (documents, authors, searches), Share bibliographic information, Map view of libraries, Voice search

**In-app purchases:** none


### SBN UBO

[App page](https://appshunter.io/ios/app/sbn-ubo/id938696113)

Manage your library loans, reserve books, and access digital content directly from your smartphone. This app provides a convenient way to stay connected to your local library, offering features like a digital library card and multilingual support.

**Highlights:** Search and reserve books, Manage library loans, Access digital content, Digital library card, Manage multiple accounts, Multilingual support

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is OPAC SBN free?

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

### Is SBN UBO free?

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

### Do OPAC SBN or SBN UBO have ads?

Neither OPAC SBN nor SBN UBO shows ads.

### Which is updated more often, OPAC SBN or SBN UBO?

OPAC SBN ships an update every 9 days, and SBN UBO every 3 months. Most recently, OPAC SBN was updated on August 23, 2026 and SBN UBO on September 5, 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.*