# Bubble Level & Measure Toolbox vs QR Viewer

The clearest difference is in-app purchases: QR Viewer at none against Bubble Level & Measure Toolbox's 1. QR Viewer also leads on iOS requirement (15.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Bubble Level & Measure Toolbox sells 1 one-off in-app purchase. QR Viewer asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Bubble Level & Measure Toolbox | QR Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 88.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 days | Every 2 days |
| Monetization | Free with in-app purchases | — |
| Size | 37 MB | 21 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Marco Pohl](https://appshunter.io/developer/1884619135) | [Thorsten Ludewig](https://appshunter.io/developer/1654735064) |

## What reviewers say

### Bubble Level & Measure Toolbox

[App page](https://appshunter.io/ios/app/bubble-level-and-measure-toolbox/id6761162898)

This app offers a precise bubble level, accurate digital ruler, smart angle finder, and wireless inspection camera. It transforms your device into a versatile measurement tool for various DIY and professional tasks, all while prioritizing user privacy and offline functionality.

**Highlights:** 3-in-1 Spirit Level & Clinometer, Accurate Digital Ruler, WiFi Inspection Camera / Endoscope (Pro), Apple Watch Sync (Pro), AR Laser Level & Plumb Bob (Pro), Smart Protractor (Pro), Decibel Meter / Sound Level (Pro)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PRO-Version | $3.99 | one-time |


### QR Viewer

[App page](https://appshunter.io/ios/app/qr-viewer/id6820565028)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level & Measure Toolbox free?

Bubble Level & Measure Toolbox is free to download, with in-app purchases available.

### Is QR Viewer free?

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

### Do Bubble Level & Measure Toolbox or QR Viewer have ads?

Neither Bubble Level & Measure Toolbox nor QR Viewer shows ads.

### Which is updated more often, Bubble Level & Measure Toolbox or QR Viewer?

Bubble Level & Measure Toolbox ships an update every 2 days, and QR Viewer every 2 days. Most recently, Bubble Level & Measure Toolbox was updated on November 9, 2026 and QR Viewer on October 31, 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.*