# UdaLibrary vs Diffusione Stereo

The clearest difference is update cadence: UdaLibrary at every 3 months against Diffusione Stereo's every 26 months. Diffusione Stereo's advantage is iOS requirement (10.0 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

UdaLibrary ships an update every 3 months, Diffusione Stereo every 26 months. The most recent releases landed on October 17, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | UdaLibrary | Diffusione Stereo |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 26 months |
| Monetization | Free | — |
| Size | 67 MB | 16 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [DOT BEYOND SRL](https://appshunter.io/developer/1384557126) | [Massimo Corvaglia](https://appshunter.io/developer/1547111124) |

## What reviewers say

### UdaLibrary

[App page](https://appshunter.io/ios/app/udalibrary/id1062630882)

Access and search the catalogs of multiple university and state libraries. Reserve books, discover new arrivals, and manage your loans. Access digital materials like e-books and audiobooks, and use a digital library card.

**Highlights:** Search and reserve books, Access digital materials, Manage loans and renewals, Digital library card, View news and events, Multi-account access

**Features:** Vision Pro support

**In-app purchases:** none


### Diffusione Stereo

[App page](https://appshunter.io/ios/app/diffusione-stereo/id1495150522)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is UdaLibrary free?

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

### Is Diffusione Stereo free?

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

### Do UdaLibrary or Diffusione Stereo have ads?

Neither UdaLibrary nor Diffusione Stereo shows ads.

### Which is updated more often, UdaLibrary or Diffusione Stereo?

UdaLibrary ships an update every 3 months, and Diffusione Stereo every 26 months. Most recently, UdaLibrary was updated on October 17, 2026 and Diffusione Stereo on October 4, 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.*