# Readius vs Decibel Meter X

The clearest difference is update cadence: Decibel Meter X at every 4 weeks against Readius's every 2 months. Readius's advantage is iOS requirement (14 vs 16.0). 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.

Readius ships an update every 2 months, Decibel Meter X every 4 weeks. The most recent releases landed on October 14, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Readius | Decibel Meter X |
| --- | --- | --- |
| 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 | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Monetization | — | Free |
| Size | 418 MB | 6 MB |
| Requires iOS | **14** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Shantou Institute of Ultrasonic Inst. Co., Ltd.](https://appshunter.io/developer/406261738) | [永超 侯](https://appshunter.io/developer/906391544) |

## What reviewers say

### Readius

[App page](https://appshunter.io/ios/app/readius/id6443592437)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Readius free?

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

### Is Decibel Meter X free?

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

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

Neither Readius nor Decibel Meter X shows ads.

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

Readius ships an update every 2 months, and Decibel Meter X every 4 weeks. Most recently, Readius was updated on October 14, 2026 and Decibel Meter X on October 24, 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.*