# OCCDEC Occasion Detection vs Noise Recorder

The clearest difference is ads: OCCDEC Occasion Detection at none against Noise Recorder's shown. Noise Recorder's advantage is update cadence (every 2 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

OCCDEC Occasion Detection ships an update every 2 weeks, Noise Recorder every 2 days. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | OCCDEC Occasion Detection | Noise Recorder |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Size | 32 MB | 45 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [LineSpotting AB](https://appshunter.io/developer/1326519237) | [SiU Ahn](https://appshunter.io/developer/1601025745) |

## What reviewers say

### OCCDEC Occasion Detection

[App page](https://appshunter.io/ios/app/occdec-occasion-detection/id1495592504)

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

**In-app purchases:** none


### Noise Recorder

[App page](https://appshunter.io/ios/app/noise-recorder/id6765866874)

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

**In-app purchases:** none


## Frequently asked questions

### Is OCCDEC Occasion Detection free?

OCCDEC Occasion Detection is free to download, with no in-app purchases.

### Is Noise Recorder free?

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

### Do OCCDEC Occasion Detection or Noise Recorder have ads?

Noise Recorder shows ads; OCCDEC Occasion Detection does not.

### Which is updated more often, OCCDEC Occasion Detection or Noise Recorder?

OCCDEC Occasion Detection ships an update every 2 weeks, and Noise Recorder every 2 days. Most recently, OCCDEC Occasion Detection was updated on November 3, 2026 and Noise Recorder on November 5, 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.*