# Sonarplay vs Compendium Audiobooks

The clearest difference is in-app purchases: Compendium Audiobooks at none against Sonarplay's 1. Compendium Audiobooks also leads on update cadence (every 5 days vs every 5 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Sonarplay sells 1 in-app purchase, starting at $9.99 per month. Compendium Audiobooks asks for nothing beyond the download.

Sonarplay ships an update every 5 weeks, Compendium Audiobooks every 5 days. The most recent releases landed on October 25, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Sonarplay | Compendium Audiobooks |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/compendium-audiobooks/id6807578229/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 5 days** |
| Monetization | — | Free |
| Size | 93 MB | 7 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [waplead solutions llc](https://appshunter.io/developer/6781998030) | [Compendium LLC](https://appshunter.io/developer/6807578231) |

## What reviewers say

### Sonarplay

[App page](https://appshunter.io/ios/app/sonarplay/id6781998028)

**Features:** Apple Wallet

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SonarPlay Premium | $9.99 | per month |


### Compendium Audiobooks

[App page](https://appshunter.io/ios/app/compendium-audiobooks/id6807578229)

Access a vast library of classic literature and philosophy as audiobooks. Enjoy chapter-by-chapter playback with adjustable speed and background listening. Start with free first chapters and unlock more content with an account.

**Highlights:** 690+ audiobooks library, Chapter-by-chapter playback, Adjustable playback speed, Background audio playback, Save progress across sessions, No sign-up required for free chapters

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

**In-app purchases:** none


## Frequently asked questions

### Is Sonarplay free?

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

### Is Compendium Audiobooks free?

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

### Do Sonarplay or Compendium Audiobooks have ads?

Neither Sonarplay nor Compendium Audiobooks shows ads.

### Which is updated more often, Sonarplay or Compendium Audiobooks?

Sonarplay ships an update every 5 weeks, and Compendium Audiobooks every 5 days. Most recently, Sonarplay was updated on October 25, 2026 and Compendium Audiobooks on October 26, 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.*