# PA ONE vs SmartOn QR (2D Code Auth)

The clearest difference is update cadence: SmartOn QR (2D Code Auth) at every 4 weeks against PA ONE's every 2 months. SmartOn QR (2D Code Auth) also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.0). On price, ads and in-app purchases there is nothing between them.

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

PA ONE ships an update every 2 months, SmartOn QR (2D Code Auth) every 4 weeks. The most recent releases landed on September 10, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | PA ONE | SmartOn QR (2D Code Auth) |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Size | 13 MB | 3 MB |
| Requires iOS | 16.0 | **11.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [PhoneAppli,inc](https://appshunter.io/developer/375879420) | [Soliton Systems K.K.](https://appshunter.io/developer/400872810) |

## What reviewers say

### PA ONE

[App page](https://appshunter.io/ios/app/pa-one/id1317171399)

**In-app purchases:** none


### SmartOn QR (2D Code Auth)

[App page](https://appshunter.io/ios/app/smarton-qr-2d-code-auth/id1470819720)

**In-app purchases:** none


## Frequently asked questions

### Is PA ONE free?

PA ONE is free to download, with no in-app purchases.

### Is SmartOn QR (2D Code Auth) free?

SmartOn QR (2D Code Auth) is free to download, with no in-app purchases.

### Do PA ONE or SmartOn QR (2D Code Auth) have ads?

Neither PA ONE nor SmartOn QR (2D Code Auth) shows ads.

### Which is updated more often, PA ONE or SmartOn QR (2D Code Auth)?

PA ONE ships an update every 2 months, and SmartOn QR (2D Code Auth) every 4 weeks. Most recently, PA ONE was updated on September 10, 2026 and SmartOn QR (2D Code Auth) on September 29, 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.*