# BossPDF vs Audio Steward · 私人有声书

The clearest difference is in-app purchases: Audio Steward · 私人有声书 at none against BossPDF's 4. Audio Steward · 私人有声书 also leads on update cadence (every 3 days vs weekly) and iOS requirement (17.0 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. BossPDF sells 4 in-app purchases, starting at $4.99 per month. Audio Steward · 私人有声书 asks for nothing beyond the download.

BossPDF ships an update weekly, Audio Steward · 私人有声书 every 3 days. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | BossPDF | Audio Steward · 私人有声书 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/audio-steward/id6776586830/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Free |
| Size | 13 MB | 6 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ZingyBear Technologies LLP](https://appshunter.io/developer/1853339411) | [叙翔 王](https://appshunter.io/developer/1896774178) |

## What reviewers say

### BossPDF

[App page](https://appshunter.io/ios/app/bosspdf-pdf-editor-and-scanner/id6759548213)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan $4.99 | $4.99 | per month |
| Annual Plan $24.99 | $24.99 | per year |
| Lifetime access $19.99 | $19.99 | one-time |
| Lifetime accèss $39.99 | $39.99 | one-time |


### Audio Steward · 私人有声书

[App page](https://appshunter.io/ios/app/audio-steward/id6776586830)

This app acts as a tool for your personal audiobooks, managing DRM-free audio files stored in your iCloud Drive. It offers cross-device progress syncing, chapter support, a sleep timer, and Siri integration. The interface is designed for a distraction-free listening experience.

**Highlights:** iCloud Drive primary storage, Local playback cache, Chapter metadata support, Cross-device progress sync, Sleep timer, Siri and Shortcuts integration, Multi-platform support (iPhone, iPad, Mac)

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

**In-app purchases:** none


## Frequently asked questions

### Is BossPDF free?

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

### Is Audio Steward · 私人有声书 free?

Audio Steward · 私人有声书 is free to download, with no in-app purchases.

### Do BossPDF or Audio Steward · 私人有声书 have ads?

Neither BossPDF nor Audio Steward · 私人有声书 shows ads.

### Which is updated more often, BossPDF or Audio Steward · 私人有声书?

BossPDF ships an update weekly, and Audio Steward · 私人有声书 every 3 days. Most recently, BossPDF was updated on October 25, 2026 and Audio Steward · 私人有声书 on October 28, 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.*