# CIELO USAL vs Libros

The clearest difference is rating: CIELO USAL at 5.0 against Libros's 3.0. CIELO USAL also leads on ratings volume (3 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

CIELO USAL holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | CIELO USAL | Libros |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/cielo-usal/id1403015571/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/libros-e-complutense-letmino/id1463016209/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | Free | Free |
| Size | 74 MB | 73 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Universidad de Salamanca](https://appshunter.io/developer/657082701) | [Odilo](https://appshunter.io/developer/976580041) |

## What reviewers say

### CIELO USAL

[App page](https://appshunter.io/ios/app/cielo-usal/id1403015571)

Access a vast digital library of academic, scientific, and leisure e-books. Manage loans and reservations, read online, or download titles for offline access. Customize your reading experience with adjustable fonts, brightness, and annotation tools.

**Highlights:** Browse library catalog, Manage loans and reservations, Read e-books online, Download books for offline reading, Customize reading format, Add notes and highlights

**In-app purchases:** none


### Libros

[App page](https://appshunter.io/ios/app/libros-e-complutense-letmino/id1463016209)

Access a curated collection of Spanish e-books from the Complutense University of Madrid. This platform allows university members to search, browse, read, digitally borrow, and reserve titles across various fields of knowledge.

**Highlights:** Access to curated Spanish e-books, Search and browse collection, Digital borrowing and reservations, Read and navigate titles, University community access

**In-app purchases:** none


## Frequently asked questions

### Is CIELO USAL free?

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

### Is Libros free?

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

### Which has better reviews, CIELO USAL or Libros?

CIELO USAL is rated higher. CIELO USAL averages 5.0 out of 5 from 3 ratings, while Libros averages 3.0 from 1 ratings.

### Do CIELO USAL or Libros have ads?

Neither CIELO USAL nor Libros shows ads.

### Which is updated more often, CIELO USAL or Libros?

CIELO USAL ships an update fortnightly, and Libros fortnightly. Most recently, CIELO USAL was updated on November 6, 2026 and Libros on November 7, 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.*