# Decibel Meter vs Delay.?

The clearest difference is price: Decibel Meter at Free against Delay.?'s $3.99. Delay.?'s advantage is in-app purchases (none vs 3) and chart position (#198 vs unranked). On ads, device support and iOS requirement there is nothing between them.

Decibel Meter is free to download; Delay.? costs $3.99 up front. Decibel Meter sells 3 in-app purchases, starting at $2.99 per 7 days. Delay.? asks for nothing beyond the download.

## The numbers

| Metric | Decibel Meter | Delay.? |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.8 (50 ratings)](https://appshunter.io/ios/app/decibel-meter-db-noise-level/id6744018521/reviews)** | — |
| Number of ratings | **50** | — |
| Positive reviews | 70.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | — |
| Monetization | Free with in-app purchases | — |
| Best chart rank | — | **#198** |
| Size | 176 MB | 15 MB |
| Requires iOS | **16.0** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [PaoApps](https://appshunter.io/developer/1746019535) | [Jeremy Horn](https://appshunter.io/developer/1828824238) |

## What reviewers say

### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-db-noise-level/id6744018521)

This tool transforms your iPhone into a real-time sound level meter. It measures and displays environmental noise in decibels, helping you monitor sound at home, work, or outdoors. Protect your hearing by detecting loud noises and staying aware of your sound environment.

**Highlights:** Real-time decibel measurement, Dynamic graph display, Min/Max/Average sound levels, Measuring timer, Pause and Reset buttons, Noise pollution checks

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Access with Trial | $2.99 | per 7 days |
| Weekly Access | $2.99 | per 7 days |
| Yearly Access | $17.99 | per year |


### Delay.?

[App page](https://appshunter.io/ios/app/delay/id6749515908)

**Currently charting:** #198 Top Paid · Utilities (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter free?

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

### Is Delay.? free?

Delay.? costs $3.99, with no in-app purchases.

### Do Decibel Meter or Delay.? have ads?

Neither Decibel Meter nor Delay.? 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.*