# AlaTool vs Noise Decibel Meter

The clearest difference is ads: AlaTool at none against Noise Decibel Meter's shown. AlaTool also leads on update cadence (every 4 weeks vs every 18 months) and iOS requirement (11.0 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.

AlaTool ships an update every 4 weeks, Noise Decibel Meter every 18 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AlaTool | Noise Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (46 ratings)](https://appshunter.io/ios/app/noise-decibel-meter/id6451040018/reviews)** |
| Number of ratings | — | **46** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 4 weeks** | Every 18 months |
| Monetization | — | Ad-supported |
| Size | 11 MB | 28 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ALATECH Technology](https://appshunter.io/developer/584198766) | [标勇 张](https://appshunter.io/developer/1644652564) |

## What reviewers say

### AlaTool

[App page](https://appshunter.io/ios/app/alatool/id1663693997)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is AlaTool free?

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

### Is Noise Decibel Meter free?

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

### Do AlaTool or Noise Decibel Meter have ads?

Noise Decibel Meter shows ads; AlaTool does not.

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

AlaTool ships an update every 4 weeks, and Noise Decibel Meter every 18 months. Most recently, AlaTool was updated on October 7, 2026 and Noise Decibel Meter on October 24, 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.*