# 老人打电话 vs PDF Conversion

The clearest difference is price: PDF Conversion at Free against 老人打电话's $0.99. PDF Conversion also leads on update cadence (every 3 weeks vs every 32 months). 老人打电话's advantage is in-app purchases (none vs 4). On ads, device support and iOS requirement there is nothing between them.

PDF Conversion is free to download; 老人打电话 costs $0.99 up front. PDF Conversion sells 4 in-app purchases, starting at $2.99 per 7 days. 老人打电话 asks for nothing beyond the download.

老人打电话 ships an update every 32 months, PDF Conversion every 3 weeks. The most recent releases landed on October 27, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | 老人打电话 | PDF Conversion |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 32 months | **Every 3 weeks** |
| Size | 1 MB | 5 MB |
| Requires iOS | **14** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [洪卫 潘](https://appshunter.io/developer/467365143) | [Beijing Litchi Fun Technology Co., Ltd.](https://appshunter.io/developer/1684888838) |

## What reviewers say

### 老人打电话

[App page](https://appshunter.io/ios/app/id6470141691)

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

**In-app purchases:** none


### PDF Conversion

[App page](https://appshunter.io/ios/app/pdf-conversion-convert-to-word/id6605929812)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $2.99 | per 7 days |
| Monthly Subscription | $4.99 | per month |
| Annual Subscription | $14.99 | per year |
| Lifetime Member | $24.99 | one-time |


## Frequently asked questions

### Is 老人打电话 free?

老人打电话 costs $0.99, with no in-app purchases.

### Is PDF Conversion free?

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

### Do 老人打电话 or PDF Conversion have ads?

Neither 老人打电话 nor PDF Conversion shows ads.

### Which is updated more often, 老人打电话 or PDF Conversion?

老人打电话 ships an update every 32 months, and PDF Conversion every 3 weeks. Most recently, 老人打电话 was updated on October 27, 2026 and PDF Conversion on October 17, 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.*