# Rada AP1 vs Decibel Meter Pro

The clearest difference is in-app purchases: Rada AP1 at none against Decibel Meter Pro's 1. Rada AP1 also leads on ads (none vs shown) and iOS requirement (15.6 vs 17.6). Decibel Meter Pro's advantage is update cadence (every 5 days vs every 7 months) and device support (3 vs 1). On price there is nothing between them.

Both are free to download. Decibel Meter Pro sells 1 one-off in-app purchase. Rada AP1 asks for nothing beyond the download.

Rada AP1 ships an update every 7 months, Decibel Meter Pro every 5 days. The most recent releases landed on October 29, 2026 and November 1, 2026 respectively.

## The numbers

| Metric | Rada AP1 | Decibel Meter Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.5 (2 ratings)](https://appshunter.io/ios/app/decibel-meter-pro-sound-level/id6779537617/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 5 days** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 15 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Kohler Mira Ltd.](https://appshunter.io/developer/1107602815) | [Alper Sumer Guc](https://appshunter.io/developer/1896672915) |

## What reviewers say

### Rada AP1

[App page](https://appshunter.io/ios/app/rada-ap1/id1107602816)

**Features:** macOS Compatibility

**In-app purchases:** none


### Decibel Meter Pro

[App page](https://appshunter.io/ios/app/decibel-meter-pro-sound-level/id6779537617)

Transform your device into a professional sound level meter. Analyze noise in dB, dBA, and dBC, view frequency spectrums, and understand your safe noise exposure limits. Record, prove, and share measurements with detailed reports and location data.

**Highlights:** Real-time spectrum analyzer, Live spectrogram, Noise dose tracking, Loud-sound alerts, Audio recording and playback, CSV data export, Calibration

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter - Premium | $2.99 | one-time |


## Frequently asked questions

### Is Rada AP1 free?

Rada AP1 is free to download, with no in-app purchases.

### Is Decibel Meter Pro free?

Decibel Meter Pro is free to download, with in-app purchases available.

### Do Rada AP1 or Decibel Meter Pro have ads?

Decibel Meter Pro shows ads; Rada AP1 does not.

### Which is updated more often, Rada AP1 or Decibel Meter Pro?

Rada AP1 ships an update every 7 months, and Decibel Meter Pro every 5 days. Most recently, Rada AP1 was updated on October 29, 2026 and Decibel Meter Pro on November 1, 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.*