# 语音备忘录 vs PDF合并拆分助手

The clearest difference is in-app purchases: PDF合并拆分助手 at none against 语音备忘录's 4. 语音备忘录's advantage is ads (none vs shown) and update cadence (every 5 days vs every 6 weeks). On price and device support there is nothing between them.

Both are free to download. 语音备忘录 sells 3 in-app purchases, starting at $1.99 per 7 days. PDF合并拆分助手 asks for nothing beyond the download.

语音备忘录 ships an update every 5 days, PDF合并拆分助手 every 6 weeks. The most recent releases landed on September 27, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | 语音备忘录 | PDF合并拆分助手 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 6 weeks |
| Size | 38 MB | 78 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [耐寒 乔](https://appshunter.io/developer/1638677892) | [Qun Cao](https://appshunter.io/developer/1655069600) |

## What reviewers say

### 语音备忘录

[App page](https://appshunter.io/ios/app/and/id6444352325)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 语音备忘录：1周 | $1.99 | per 7 days |
| 语音备忘录：3个月 | $14.99 | per 3 months |
| 语音备忘录：3个月 | $24.99 | per 3 months |


### PDF合并拆分助手

[App page](https://appshunter.io/ios/app/pdf-pdf/id6770174946)

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

**In-app purchases:** none


## Frequently asked questions

### Is 语音备忘录 free?

语音备忘录 is free to download, with in-app purchases available.

### Is PDF合并拆分助手 free?

PDF合并拆分助手 is free to download, with no in-app purchases.

### Do 语音备忘录 or PDF合并拆分助手 have ads?

PDF合并拆分助手 shows ads; 语音备忘录 does not.

### Which is updated more often, 语音备忘录 or PDF合并拆分助手?

语音备忘录 ships an update every 5 days, and PDF合并拆分助手 every 6 weeks. Most recently, 语音备忘录 was updated on September 27, 2026 and PDF合并拆分助手 on September 19, 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.*