# Decibel Meter X vs POScan

The clearest difference is update cadence: POScan at every 5 days against Decibel Meter X's every 4 weeks. On price, ads, 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.

Decibel Meter X ships an update every 4 weeks, POScan every 5 days. The most recent releases landed on November 4, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Decibel Meter X | POScan |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (57 ratings)](https://appshunter.io/ios/app/decibel-meter-x/id6478142605/reviews)** | — |
| Number of ratings | **57** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Every 5 days** |
| Monetization | Free | — |
| Size | 6 MB | 56 MB |
| Requires iOS | 16.0 | 16 |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [永超 侯](https://appshunter.io/developer/906391544) | [ollobaby](https://appshunter.io/developer/1790456124) |

## What reviewers say

### Decibel Meter X

[App page](https://appshunter.io/ios/app/decibel-meter-x/id6478142605)

This application precisely measures sound levels and analyzes audio spectrums. It can also generate specific frequency sounds for testing, research, or therapeutic purposes. Its intuitive interface makes sound exploration accessible to all users.

**Highlights:** Precise decibel level measurement, Audio spectrum analysis, Spectrogram display, Generate specific frequency sounds, Intuitive user interface, Detailed usage instructions

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

**In-app purchases:** none


### POScan

[App page](https://appshunter.io/ios/app/poscan/id6746837194)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter X free?

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

### Is POScan free?

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

### Do Decibel Meter X or POScan have ads?

Neither Decibel Meter X nor POScan shows ads.

### Which is updated more often, Decibel Meter X or POScan?

Decibel Meter X ships an update every 4 weeks, and POScan every 5 days. Most recently, Decibel Meter X was updated on November 4, 2026 and POScan on October 28, 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.*