# CJDecibel vs NF Interface

The clearest difference is ads: NF Interface at none against CJDecibel's shown. CJDecibel's advantage is iOS requirement (11.0 vs 17.2). 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.

## The numbers

| Metric | CJDecibel | NF Interface |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/cjdecibel-noise-detection/id6479873232/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Weekly | — |
| Monetization | Ad-supported | — |
| Size | 37 MB | 1 MB |
| Requires iOS | **11.0** | 17.2 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [炽金 练](https://appshunter.io/developer/1523269489) | [Ekaterina Rodionova](https://appshunter.io/developer/1460078743) |

## What reviewers say

### CJDecibel

[App page](https://appshunter.io/ios/app/cjdecibel-noise-detection/id6479873232)

This utility app offers real-time, high-precision decibel measurements to detect noise levels. It features a minimalist interface for easy operation, allows recording of detection locations, and enables sharing or exporting of historical data.

**Highlights:** Real-time decibel measurement, High-precision detection, Location recording, Data sharing and export, Detection history viewing

**Features:** macOS Compatibility

**In-app purchases:** none


### NF Interface

[App page](https://appshunter.io/ios/app/nf-interface/id6480238825)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CJDecibel free?

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

### Is NF Interface free?

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

### Do CJDecibel or NF Interface have ads?

CJDecibel shows ads; NF Interface does not.

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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.*