# 開業支援G21 vs Quick PDF

The clearest difference is ads: 開業支援G21 at none against Quick PDF's shown. Quick PDF's advantage is update cadence (every 11 days vs every 2 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

開業支援G21 ships an update every 2 months, Quick PDF every 11 days. The most recent releases landed on November 6, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | 開業支援G21 | Quick PDF |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 11 days** |
| Size | 5 MB | 68 MB |
| Requires iOS | **15.6** | 16.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [株式会社ヨシダ](https://appshunter.io/developer/1417159527) | [Fuzhou Chengfei Network Technology Co., Ltd](https://appshunter.io/developer/6810607431) |

## What reviewers say

### 開業支援G21

[App page](https://appshunter.io/ios/app/g21/id1424788384)

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

**In-app purchases:** none


### Quick PDF

[App page](https://appshunter.io/ios/app/quick-pdf-files-scanner/id6812264133)

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

**In-app purchases:** none


## Frequently asked questions

### Is 開業支援G21 free?

開業支援G21 is free to download, with no in-app purchases.

### Is Quick PDF free?

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

### Do 開業支援G21 or Quick PDF have ads?

Quick PDF shows ads; 開業支援G21 does not.

### Which is updated more often, 開業支援G21 or Quick PDF?

開業支援G21 ships an update every 2 months, and Quick PDF every 11 days. Most recently, 開業支援G21 was updated on November 6, 2026 and Quick PDF on November 9, 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.*