# Stereo Microphone vs QR Guard

The clearest difference is price: QR Guard at Free against Stereo Microphone's $2.99. QR Guard also leads on update cadence (every 3 days vs every 6 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

QR Guard is free to download; Stereo Microphone costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Stereo Microphone ships an update every 6 weeks, QR Guard every 3 days. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Stereo Microphone | QR Guard |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.5 (10 ratings)](https://appshunter.io/ios/app/stereo-microphone/id6449208745/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 85.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Every 3 days** |
| Monetization | Paid | — |
| Size | 3 MB | 28 MB |
| Requires iOS | **15.0** | 15.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryouta Kira](https://appshunter.io/developer/862984358) | [NINJA SYSTEM](https://appshunter.io/developer/1896681837) |

## What reviewers say

### Stereo Microphone

[App page](https://appshunter.io/ios/app/stereo-microphone/id6449208745)

Transform your device into a powerful microphone or audio recorder. Enhance your sound with built-in effects like pitch shifting and equalization. Supports various high-quality recording formats for flexible audio capture.

**Highlights:** Device as microphone, Audio recording, Pitch shifter effect, 10-band equalizer, Noise reduction, Multiple recording formats

**Features:** Vision Pro support, iPhone Duo support

**In-app purchases:** none


### QR Guard

[App page](https://appshunter.io/ios/app/qr-guard-check-before-open/id6769943765)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Stereo Microphone free?

Stereo Microphone costs $2.99, with no in-app purchases.

### Is QR Guard free?

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

### Do Stereo Microphone or QR Guard have ads?

Neither Stereo Microphone nor QR Guard shows ads.

### Which is updated more often, Stereo Microphone or QR Guard?

Stereo Microphone ships an update every 6 weeks, and QR Guard every 3 days. Most recently, Stereo Microphone was updated on November 11, 2026 and QR Guard on November 5, 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.*