# Aop vs Noise Recorder

The clearest difference is in-app purchases: Aop at none against Noise Recorder's 1. Aop also leads on ads (none vs shown) and update cadence (daily vs monthly). On price and device support there is nothing between them.

Both are free to download. Noise Recorder sells 1 in-app purchase, starting at $0.49 per month. Aop asks for nothing beyond the download.

Aop ships an update daily, Noise Recorder monthly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Aop | Noise Recorder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Monthly |
| Size | 1 MB | 64 MB |
| Requires iOS | **13.0** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Geo Taxi LLC](https://appshunter.io/developer/1479129662) | [Robonet Communications inc.](https://appshunter.io/developer/1187823015) |

## What reviewers say

### Aop

[App page](https://appshunter.io/ios/app/aop-auto-open/id6447700271)

**Features:** macOS Compatibility

**In-app purchases:** none


### Noise Recorder

[App page](https://appshunter.io/ios/app/noise-recorder-db-meter/id6805402842)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.49 | per month |


## Frequently asked questions

### Is Aop free?

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

### Is Noise Recorder free?

Noise Recorder is free to download, with in-app purchases available.

### Do Aop or Noise Recorder have ads?

Noise Recorder shows ads; Aop does not.

### Which is updated more often, Aop or Noise Recorder?

Aop ships an update daily, and Noise Recorder monthly. Most recently, Aop was updated on November 3, 2026 and Noise Recorder on October 31, 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.*