# Decibel Meter Plus vs Burrow Tunnel

The clearest difference is price: Burrow Tunnel at Free against Decibel Meter Plus's $2.99. Burrow Tunnel also leads on update cadence (every 2 weeks vs every 2 months). Decibel Meter Plus's advantage is in-app purchases (none vs 1) and iOS requirement (15.8 vs 17.0). On ads and device support there is nothing between them.

Burrow Tunnel is free to download; Decibel Meter Plus costs $2.99 up front. Burrow Tunnel sells 1 one-off in-app purchase. Decibel Meter Plus asks for nothing beyond the download.

Decibel Meter Plus ships an update every 2 months, Burrow Tunnel every 2 weeks. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Decibel Meter Plus | Burrow Tunnel |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[3.0 (126 ratings)](https://appshunter.io/ios/app/decibel-meter-plus/id648142711/reviews)** | — |
| Number of ratings | **126** | — |
| Positive reviews | 35.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 14 MB | 45 MB |
| Requires iOS | **15.8** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [华芳 张](https://appshunter.io/developer/586041482) | [鑫 姜](https://appshunter.io/developer/1893112777) |

## What reviewers say

### Decibel Meter Plus

[App page](https://appshunter.io/ios/app/decibel-meter-plus/id648142711)

Measure ambient sound levels and understand their impact on hearing. This app provides real-time decibel readings, exposure time guidelines, and information on noise-induced hearing loss. It helps you identify loud environments and learn how to protect your hearing.

**Highlights:** Measure sound levels, Display average, peak, and max values, Plotted history of average values, Information on NIHL, Decibel exposure time guidelines, Calibrate measurements, Record and export data

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and simple interface
- 📊 Clear visual display with color-coded sound levels
- 🎯 Useful for comparative measurements
- 📈 Includes graphical strip chart functionality
- ⚡ Responsive and quick performance

**What reviewers complain about**

- ❌ Severely inaccurate decibel readings
- 📍 Consistently reads 10-50 dB higher than actual levels
- 🔧 No calibration function available
- 🐛 Doesn't return to 0 dB in silent conditions
- 📱 Requires app updates and iOS compatibility fixes

**Reported bugs**

- App requires developer updates and iOS compatibility fixes
- Baseline reading of 50-80 dB even in complete silence
- Readings spike dramatically with minimal sound input
- Graph display lacks user control
- Inconsistent measurements in same environment

**Requested features**

- Calibration function to adjust readings
- Higher maximum dB limit (120+ dB) for loud events
- Ability to attach photos with meter readings
- Better baseline reset to 0 dB in silence
- dB(A) weighting filter option


### Burrow Tunnel

[App page](https://appshunter.io/ios/app/burrow-tunnel/id6764009166)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Burrow Pro | $14.99 | one-time |


## Frequently asked questions

### Is Decibel Meter Plus free?

Decibel Meter Plus costs $2.99, with no in-app purchases.

### Is Burrow Tunnel free?

Burrow Tunnel is free to download, with in-app purchases available.

### Do Decibel Meter Plus or Burrow Tunnel have ads?

Neither Decibel Meter Plus nor Burrow Tunnel shows ads.

### Which is updated more often, Decibel Meter Plus or Burrow Tunnel?

Decibel Meter Plus ships an update every 2 months, and Burrow Tunnel every 2 weeks. Most recently, Decibel Meter Plus was updated on October 26, 2026 and Burrow Tunnel on October 25, 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.*