# QR Scanner # vs Plumbline Studio

The clearest difference is price: QR Scanner # at Free against Plumbline Studio's $0.99. QR Scanner # also leads on iOS requirement (13.0 vs 17.0). Plumbline Studio's advantage is ads (none vs shown) and update cadence (every 10 days vs every 5 weeks). On in-app purchases and device support there is nothing between them.

QR Scanner # is free to download; Plumbline Studio costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

QR Scanner # ships an update every 5 weeks, Plumbline Studio every 10 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | QR Scanner # | Plumbline Studio |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[4.7 (30 ratings)](https://appshunter.io/ios/app/qr-scanner/id1579231628/reviews)** | — |
| Number of ratings | **30** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Ad-supported | — |
| Size | 16 MB | 3 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Khang Le](https://appshunter.io/developer/1078541780) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### QR Scanner #

[App page](https://appshunter.io/ios/app/qr-scanner/id1579231628)

Easily create and scan QR codes for various purposes, including WiFi, contact information, social media, and URLs. Generate codes for events, plain text, and more, with the ability to clone scanned codes.

**Highlights:** Create QR codes, Scan QR codes, Manage QR codes, Clone scanned QR codes, Generate WiFi QR codes, Generate contact (vCard/MeCard) QR codes, Generate social media QR codes, Generate URL QR codes

**Features:** macOS Compatibility

**In-app purchases:** none


### Plumbline Studio

[App page](https://appshunter.io/ios/app/plumbline-studio-level-tool/id6771016320)

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

**In-app purchases:** none


## Frequently asked questions

### Is QR Scanner # free?

QR Scanner # is free to download, with no in-app purchases.

### Is Plumbline Studio free?

Plumbline Studio costs $0.99, with no in-app purchases.

### Do QR Scanner # or Plumbline Studio have ads?

QR Scanner # shows ads; Plumbline Studio does not.

### Which is updated more often, QR Scanner # or Plumbline Studio?

QR Scanner # ships an update every 5 weeks, and Plumbline Studio every 10 days. Most recently, QR Scanner # was updated on October 24, 2026 and Plumbline Studio on October 24, 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.*