# Noise Decibel Meter vs KeyVault Pro

The clearest difference is ads: KeyVault Pro at none against Noise Decibel Meter's shown. KeyVault Pro also leads on update cadence (monthly vs every 18 months) and iOS requirement (13.4 vs 15.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Noise Decibel Meter ships an update every 18 months, KeyVault Pro monthly. The most recent releases landed on October 17, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Noise Decibel Meter | KeyVault Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (43 ratings)](https://appshunter.io/ios/app/noise-decibel-meter/id6451040018/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 28 MB | 87 MB |
| Requires iOS | 15.0 | **13.4** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [标勇 张](https://appshunter.io/developer/1644652564) | [Tuners Technology Limited](https://appshunter.io/developer/1712061638) |

## What reviewers say

### Noise Decibel Meter

[App page](https://appshunter.io/ios/app/noise-decibel-meter/id6451040018)

Measure real-time, maximum, and average decibel levels. Record data from each test and keep the screen on for continuous monitoring. Features a simple and intuitive interface.

**Highlights:** Real-time decibel measurement, Maximum decibel tracking, Average decibel calculation, Data recording per test, Screen always on option, Simple interface

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

**In-app purchases:** none


### KeyVault Pro

[App page](https://appshunter.io/ios/app/keyvault-pro/id6746397621)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Noise Decibel Meter free?

Noise Decibel Meter is free to download, with no in-app purchases.

### Is KeyVault Pro free?

KeyVault Pro is free to download, with no in-app purchases.

### Do Noise Decibel Meter or KeyVault Pro have ads?

Noise Decibel Meter shows ads; KeyVault Pro does not.

### Which is updated more often, Noise Decibel Meter or KeyVault Pro?

Noise Decibel Meter ships an update every 18 months, and KeyVault Pro monthly. Most recently, Noise Decibel Meter was updated on October 17, 2026 and KeyVault Pro on October 7, 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.*