# bdsound vs PDF Converter Pro Master

The clearest difference is iOS requirement: bdsound at 9.0 against PDF Converter Pro Master's 16.0. 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 2 months. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | bdsound | PDF Converter Pro Master |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 101 MB | 11 MB |
| Requires iOS | **9.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GUANDDONG TIANPU TECHNOLOGY GROUP CO.,LTD.](https://appshunter.io/developer/1637560013) | [HK YIHAN TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1761346342) |

## What reviewers say

### bdsound

[App page](https://appshunter.io/ios/app/bdsound/id6504468660)

**Features:** macOS Compatibility

**In-app purchases:** none


### PDF Converter Pro Master

[App page](https://appshunter.io/ios/app/pdf-converter-pro-master/id6612030395)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is bdsound free?

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

### Is PDF Converter Pro Master free?

PDF Converter Pro Master is free to download, with no in-app purchases.

### Do bdsound or PDF Converter Pro Master have ads?

Neither bdsound nor PDF Converter Pro Master shows ads.

### Which is updated more often, bdsound or PDF Converter Pro Master?

bdsound ships an update every 2 months, and PDF Converter Pro Master every 2 months. Most recently, bdsound was updated on October 8, 2026 and PDF Converter Pro Master on October 7, 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.*