# Synopsia vs Vox libri

The clearest difference is price: Synopsia at Free against Vox libri's $4.99. Synopsia also leads on ratings volume (290 vs 2) and iOS requirement (13.0 vs 18.0). Vox libri's advantage is in-app purchases (none vs 4) and review sentiment (100% vs 69%). On update cadence, ads and device support there is nothing between them.

Synopsia is free to download; Vox libri costs $4.99 up front. Synopsia sells 4 in-app purchases, starting at $6.99 per month. Vox libri asks for nothing beyond the download.

Vox libri holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Synopsia has 290 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 69% of Synopsia's written reviews are positive against 100% of Vox libri's.

Synopsia ships an update every 2 weeks, Vox libri every 11 days. Both last shipped on October 25, 2026.

## The numbers

| Metric | Synopsia | Vox libri |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | [4.6 (290 ratings)](https://appshunter.io/ios/app/synopsia-book-summaries/id6448647429/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/vox-libri/id6745276008/reviews)** |
| Number of ratings | **290** | 2 |
| Positive reviews | 69.4% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 11 days** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 32 MB | 39 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | iPhone, iPad, iPod, Vision Pro | iPhone, iPad, Mac, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Devpool](https://appshunter.io/developer/945885126) | [Jonathan Chacon Barbero](https://appshunter.io/developer/405094334) |

## What reviewers say

### Synopsia

[App page](https://appshunter.io/ios/app/synopsia-book-summaries/id6448647429)

Access key ideas from top books in audio summaries. Learn new concepts quickly, whether you're commuting or relaxing. Offers a vast library, speed control, and offline listening.

**Highlights:** Extensive library of book summaries, Bionic Reading for faster absorption, Adjustable font size and speed control, Subtitles and automatic video player, Offline book summary downloads, Learn new words and access key points

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Synopsia+ Monthly Subscription | $6.99 | per month |
| Synopsia+ Annual Subscription | $6.99 | per year |
| Buy a book | $1.99 | one-time |
| Synopsia+ Lifetime | $99.99 | one-time |

**What reviewers like**

- 👍 Great app idea
- 👍 Nice idea for book summaries
- 👍 Cool app for books
- 👍 App reads books
- 👍 Excellent application

**What reviewers complain about**

- 👎 Very few books of interest
- 👎 Cannot find books when searching
- 👎 No key points
- 👎 No citations
- 👎 Cannot ask AI questions

**Reported bugs**

- Error when clicking download
- When I click buy on Amazon it takes me to the French Amazon store
- Cannot get bookmarked titles off my list
- Support website oriented toward business partners, not app users
- There are not any summaries available in this app to listen to

**Requested features**

- Support for Airplay, Carplay, and Chromecast
- Ability to copy and paste summaries and share them
- Requests for books, even in French
- Offline mode feature
- Make Amazon link go to U.S. Amazon store


### Vox libri

[App page](https://appshunter.io/ios/app/vox-libri/id6745276008)

This app offers a flexible and personalized reading experience for books and documents. It supports various reading methods including text-to-speech, braille displays, and customizable on-screen options. Enjoy your content comfortably and accessibly, with features like AI translation and smart navigation.

**Highlights:** High-quality text-to-speech, Braille display compatibility, Customizable reading screen, Support for multiple document formats, Fully accessible interface, Smart navigation, On-device AI translation and summarization

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is Synopsia free?

Synopsia is free to download, with in-app purchases available.

### Is Vox libri free?

Vox libri costs $4.99, with no in-app purchases.

### Which has better reviews, Synopsia or Vox libri?

Vox libri is rated higher. Synopsia averages 4.6 out of 5 from 290 ratings, while Vox libri averages 5.0 from 2 ratings.

### Do Synopsia or Vox libri have ads?

Neither Synopsia nor Vox libri shows ads.

### Which is updated more often, Synopsia or Vox libri?

Synopsia ships an update every 2 weeks, and Vox libri every 11 days. Most recently, Synopsia was updated on October 25, 2026 and Vox libri on October 25, 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.*