# QR Code vs EchoPDF Ai

The clearest difference is in-app purchases: EchoPDF Ai at none against QR Code's 2. EchoPDF Ai also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. QR Code sells 2 in-app purchases, starting at $4.99 per 7 days. EchoPDF Ai asks for nothing beyond the download.

QR Code ships an update every 3 weeks, EchoPDF Ai monthly. The most recent releases landed on September 15, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | QR Code | EchoPDF Ai |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 25 MB | 644 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Pham Dinh Sy](https://appshunter.io/developer/1023242271) | [UNLIMITED BURST TECHNOLOGY CO., LIMITED](https://appshunter.io/developer/1842058922) |

## What reviewers say

### QR Code

[App page](https://appshunter.io/ios/app/qr-code-scan-and-create-fast/id6757103977)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Subscription | $4.99 | per 7 days |
| Yearly Subscription | $29.99 | per year |


### EchoPDF Ai

[App page](https://appshunter.io/ios/app/echopdf-ai/id6761255593)

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

**In-app purchases:** none


## Frequently asked questions

### Is QR Code free?

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

### Is EchoPDF Ai free?

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

### Do QR Code or EchoPDF Ai have ads?

QR Code shows ads; EchoPDF Ai does not.

### Which is updated more often, QR Code or EchoPDF Ai?

QR Code ships an update every 3 weeks, and EchoPDF Ai monthly. Most recently, QR Code was updated on September 15, 2026 and EchoPDF Ai on September 21, 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.*