# QRCodeFlash vs 旅電 PLUG

The clearest difference is price: 旅電 PLUG at Free against QRCodeFlash's $0.99. 旅電 PLUG also leads on update cadence (every 4 days vs every 3 months) and iOS requirement (15.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

旅電 PLUG is free to download; QRCodeFlash costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

QRCodeFlash ships an update every 3 months, 旅電 PLUG every 4 days. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | QRCodeFlash | 旅電 PLUG |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 4 days** |
| Size | 5 MB | 43 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Bosian Liou](https://appshunter.io/developer/942279071) | [Pluginn Technology Co., Ltd.](https://appshunter.io/developer/1495186384) |

## What reviewers say

### QRCodeFlash

[App page](https://appshunter.io/ios/app/qrcodeflash/id1209846441)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### 旅電 PLUG

[App page](https://appshunter.io/ios/app/plug-inn/id6757784413)

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

**In-app purchases:** none


## Frequently asked questions

### Is QRCodeFlash free?

QRCodeFlash costs $0.99, with no in-app purchases.

### Is 旅電 PLUG free?

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

### Do QRCodeFlash or 旅電 PLUG have ads?

Neither QRCodeFlash nor 旅電 PLUG shows ads.

### Which is updated more often, QRCodeFlash or 旅電 PLUG?

QRCodeFlash ships an update every 3 months, and 旅電 PLUG every 4 days. Most recently, QRCodeFlash was updated on October 8, 2026 and 旅電 PLUG on October 7, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*