# The Best Sound Meter vs eRealSign Authenticator

The clearest difference is in-app purchases: eRealSign Authenticator at none against The Best Sound Meter's 2. eRealSign Authenticator also leads on ads (none vs shown). On price, device support and iOS requirement there is nothing between them.

Both are free to download. The Best Sound Meter sells 2 in-app purchases, starting at $2.99 per 7 days. eRealSign Authenticator asks for nothing beyond the download.

## The numbers

| Metric | The Best Sound Meter | eRealSign Authenticator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/the-best-sound-meter/id901506954/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 110 MB | 49 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ZipoApps](https://appshunter.io/developer/1671444635) | [UAM TECHNOLOGIES CORP](https://appshunter.io/developer/1887657490) |

## What reviewers say

### The Best Sound Meter

[App page](https://appshunter.io/ios/app/the-best-sound-meter/id901506954)

This app measures ambient sound levels using your device's microphone, displaying decibel (dB) readings. It offers features like customizable themes, adjustable refresh rates, data history, and calibration for precise measurements. It's designed for both casual users and professionals needing a reference tool for noise detection.

**Highlights:** Measures sound levels in decibels (dB), Customizable themes, Adjustable refresh rate, Data history and editing, Screen always-on mode, Calibration tool, Offline functionality

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 week subscription | $2.99 | per 7 days |
| Forever one-time payment | $12.99 | one-time |


### eRealSign Authenticator

[App page](https://appshunter.io/ios/app/erealsign-authenticator/id6761076971)

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

**In-app purchases:** none


## Frequently asked questions

### Is The Best Sound Meter free?

The Best Sound Meter is free to download, with in-app purchases available.

### Is eRealSign Authenticator free?

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

### Do The Best Sound Meter or eRealSign Authenticator have ads?

The Best Sound Meter shows ads; eRealSign Authenticator 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.*