# DeLibrista vs UDABook

The clearest difference is iOS requirement: DeLibrista at 15.1 against UDABook's 18.0. 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.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | DeLibrista | UDABook |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Size | 44 MB | 66 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Ezequiel Guitler](https://appshunter.io/developer/1813008081) | [Universidad del Azuay](https://appshunter.io/developer/1651454697) |

## What reviewers say

### DeLibrista

[App page](https://appshunter.io/ios/app/delibrista/id6745572392)

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

**In-app purchases:** none


### UDABook

[App page](https://appshunter.io/ios/app/udabook/id6746132182)

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

**In-app purchases:** none


## Frequently asked questions

### Is DeLibrista free?

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

### Is UDABook free?

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

### Do DeLibrista or UDABook have ads?

Neither DeLibrista nor UDABook shows ads.

### Which is updated more often, DeLibrista or UDABook?

DeLibrista ships an update every 3 weeks, and UDABook every 3 weeks. Most recently, DeLibrista was updated on October 6, 2026 and UDABook on October 15, 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.*