# Decibel Meter X vs iSPL PRO+

The clearest difference is in-app purchases: Decibel Meter X at none against iSPL PRO+'s 1. Decibel Meter X also leads on iOS requirement (16.0 vs 26.0). On price, ads and device support there is nothing between them.

Both are free to download. iSPL PRO+ sells 1 one-off in-app purchase. Decibel Meter X asks for nothing beyond the download.

## The numbers

| Metric | Decibel Meter X | iSPL PRO+ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (56 ratings)](https://appshunter.io/ios/app/decibel-meter-x/id6478142605/reviews)** | — |
| Number of ratings | **56** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 weeks | — |
| Monetization | Free | — |
| Size | 6 MB | 23 MB |
| Requires iOS | **16.0** | 26.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [永超 侯](https://appshunter.io/developer/906391544) | [Colours Lab](https://appshunter.io/developer/528274160) |

## 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


### iSPL PRO+

[App page](https://appshunter.io/ios/app/ispl-pro-plus/id6762527669)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Unlock | $4.99 | one-time |


## Frequently asked questions

### Is Decibel Meter X free?

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

### Is iSPL PRO+ free?

iSPL PRO+ is free to download, with in-app purchases available.

### Do Decibel Meter X or iSPL PRO+ have ads?

Neither Decibel Meter X nor iSPL PRO+ shows ads.

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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.*