# NoiseLevel vs Blue Switch

The clearest difference is price: Blue Switch at Free against NoiseLevel's $0.99. Blue Switch also leads on rating (3.8 vs 2.6). NoiseLevel's advantage is review sentiment (56% vs 17%) and in-app purchases (none vs 1). On ratings volume and device support there is nothing between them.

Blue Switch is free to download; NoiseLevel costs $0.99 up front. Blue Switch sells 1 one-off in-app purchase. NoiseLevel asks for nothing beyond the download.

Blue Switch holds the better App Store score, 3.8 against 2.6. Both are backed by a comparable volume of ratings — 28 and 43 respectively. Written reviews complicate that: 56% of NoiseLevel's written reviews are positive against 17% of Blue Switch's, so the app with the better star average is not the one people write more warmly about.

NoiseLevel ships an update fortnightly, Blue Switch every 3 months. The most recent releases landed on October 15, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | NoiseLevel | Blue Switch |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.6 (28 ratings)](https://appshunter.io/ios/app/noiselevel/id302830630/reviews) | **[3.8 (43 ratings)](https://appshunter.io/ios/app/blue-switch/id828280876/reviews)** |
| Number of ratings | 28 | **43** |
| Positive reviews | **56.0% of reviews** | 16.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Fortnightly** | Every 3 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 3 MB | 39 MB |
| Requires iOS | **10.0** | 18.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | +4 | 4+ |
| Developer | [KBMSoft ApS](https://appshunter.io/developer/288294299) | [Vitalij Schaefer](https://appshunter.io/developer/393749449) |

## What reviewers say

### NoiseLevel

[App page](https://appshunter.io/ios/app/noiselevel/id302830630)

Measure ambient sound levels in decibels using your device's microphone. Visualize sound intensity with a dynamic balloon that changes size and color, bursting at high levels. Experiment with different sounds and environments for fun and insight.

**Highlights:** Measures sound in decibels (dB), Visualizes sound with a dynamic balloon, Balloon size and color change with sound level, Balloon bursts at high sound levels, Uses device microphone, Screen orientation flips

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

**In-app purchases:** none


### Blue Switch

[App page](https://appshunter.io/ios/app/blue-switch/id828280876)

Control 2, 4, or 8 channel Bluetooth BLE relay modules from your iPhone or iPad. Assign custom names to modules and individual relays for easy identification and management. Enhance security by changing the default password.

**Highlights:** Control 2, 4, or 8 channel relay modules, Bluetooth BLE connectivity, Assign custom module aliases, Assign custom relay aliases, Change default password for security, Connect to multiple modules

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $17.99 | one-time |


## Frequently asked questions

### Is NoiseLevel free?

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

### Is Blue Switch free?

Blue Switch is free to download, with in-app purchases available.

### Which has better reviews, NoiseLevel or Blue Switch?

Blue Switch is rated higher. NoiseLevel averages 2.6 out of 5 from 28 ratings, while Blue Switch averages 3.8 from 43 ratings.

### Do NoiseLevel or Blue Switch have ads?

Blue Switch shows ads; NoiseLevel does not.

### Which is updated more often, NoiseLevel or Blue Switch?

NoiseLevel ships an update fortnightly, and Blue Switch every 3 months. Most recently, NoiseLevel was updated on October 15, 2026 and Blue Switch on October 10, 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.*