# Liber Pro vs Aquinas Audio Summa

The clearest difference is review sentiment: Liber Pro at 86% against Aquinas Audio Summa's 0%. Liber Pro also leads on in-app purchases (none vs 1). Aquinas Audio Summa's advantage is rating (4.9 vs 4.4) and iOS requirement (12.0 vs 17.6). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Aquinas Audio Summa sells 1 one-off in-app purchase. Liber Pro asks for nothing beyond the download.

Aquinas Audio Summa holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews complicate that: 86% of Liber Pro's written reviews are positive against 0% of Aquinas Audio Summa's, so the app with the better star average is not the one people write more warmly about.

Liber Pro ships an update every 13 months, Aquinas Audio Summa every 11 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Liber Pro | Aquinas Audio Summa |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (8 ratings)](https://appshunter.io/ios/app/liber-pro/id330876689/reviews) | **[4.9 (7 ratings)](https://appshunter.io/ios/app/aquinas-audio-summa/id763557787/reviews)** |
| Number of ratings | **8** | 7 |
| Positive reviews | **85.7% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 11 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 132 MB | 14 MB |
| Requires iOS | 17.6 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [James Fryar](https://appshunter.io/developer/381131671) | [WGQM Partners, LLC](https://appshunter.io/developer/1731208667) |

## What reviewers say

### Liber Pro

[App page](https://appshunter.io/ios/app/liber-pro/id330876689)

This app provides a digital version of the 1961 Liber Usualis, a comprehensive book of Gregorian Chant. It features a dynamic calendar, searchable content, user-defined bookmarks, and annotation tools for easy navigation and study.

**Highlights:** 1961 Liber Usualis eBook, Dynamic liturgical calendar, User-defined bookmarks, Text-based search, Annotation tools, Browser-like navigation

**Features:** macOS Compatibility

**In-app purchases:** none


### Aquinas Audio Summa

[App page](https://appshunter.io/ios/app/aquinas-audio-summa/id763557787)

Explore the foundational concepts of theology through an audio presentation of St. Thomas Aquinas's Summa Theologica, Part 1. Sample sermons for free and upgrade for unlimited access to the complete library of talks, streamed directly to your device.

**Highlights:** Audio presentation of Summa Theologica Part 1, Covers 126 questions across five sections, Streamed audio, no device storage used, Works on iPhone and iPad, Free sample sermons, In-app upgrade for full access

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Catholic Summa Full Library | $5.99 | one-time |


## Frequently asked questions

### Is Liber Pro free?

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

### Is Aquinas Audio Summa free?

Aquinas Audio Summa is free to download, with in-app purchases available.

### Which has better reviews, Liber Pro or Aquinas Audio Summa?

Aquinas Audio Summa is rated higher. Liber Pro averages 4.4 out of 5 from 8 ratings, while Aquinas Audio Summa averages 4.9 from 7 ratings.

### Do Liber Pro or Aquinas Audio Summa have ads?

Neither Liber Pro nor Aquinas Audio Summa shows ads.

### Which is updated more often, Liber Pro or Aquinas Audio Summa?

Liber Pro ships an update every 13 months, and Aquinas Audio Summa every 11 months. Most recently, Liber Pro was updated on October 23, 2026 and Aquinas Audio Summa on October 22, 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.*