# Noise Decibel Meter vs AE Note

The clearest difference is in-app purchases: Noise Decibel Meter at none against AE Note's 4. Noise Decibel Meter also leads on device support (3 vs 1). AE Note's advantage is ads (none vs shown) and update cadence (monthly vs every 18 months). On price and iOS requirement there is nothing between them.

Both are free to download. AE Note sells 4 in-app purchases, starting at $4.99 per month. Noise Decibel Meter asks for nothing beyond the download.

Noise Decibel Meter ships an update every 18 months, AE Note monthly. The most recent releases landed on September 13, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Noise Decibel Meter | AE Note |
| --- | --- | --- |
| 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** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 18 months | **Monthly** |
| Monetization | Ad-supported | — |
| Size | 28 MB | 59 MB |
| Requires iOS | **15.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [标勇 张](https://appshunter.io/developer/1644652564) | [AEDISON TECHNOLOGY PTE. LTD.](https://appshunter.io/developer/1736293832) |

## 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


### AE Note

[App page](https://appshunter.io/ios/app/ae-note/id6479555921)

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly Plan | $4.99 | per month |
| Premium Monthly Plan | $19.99 | per month |
| Basic Yearly Plan | $56.99 | per year |
| Premium Yearly Plan | $99.99 | per year |


## Frequently asked questions

### Is Noise Decibel Meter free?

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

### Is AE Note free?

AE Note is free to download, with in-app purchases available.

### Do Noise Decibel Meter or AE Note have ads?

Noise Decibel Meter shows ads; AE Note does not.

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

Noise Decibel Meter ships an update every 18 months, and AE Note monthly. Most recently, Noise Decibel Meter was updated on September 13, 2026 and AE Note on September 20, 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.*