# Secuyou Lock vs Decibel Meter dB

The clearest difference is price: Secuyou Lock at Free against Decibel Meter dB's $3.99. Secuyou Lock also leads on update cadence (every 3 weeks vs every 4 months) and iOS requirement (12.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Secuyou Lock is free to download; Decibel Meter dB costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Secuyou Lock ships an update every 3 weeks, Decibel Meter dB every 4 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Secuyou Lock | Decibel Meter dB |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/decibel-meter-db/id6740335067/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | — | Paid |
| Size | 1 MB | 1 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Secuyou ApS](https://appshunter.io/developer/1046482453) | [Morten Punnerud](https://appshunter.io/developer/969844397) |

## What reviewers say

### Secuyou Lock

[App page](https://appshunter.io/ios/app/secuyou-lock/id1080301204)

**Features:** macOS Compatibility

**In-app purchases:** none


### Decibel Meter dB

[App page](https://appshunter.io/ios/app/decibel-meter-db/id6740335067)

This app provides real-time decibel monitoring with a dynamic visual display and color-coded alerts for different noise thresholds. It helps users track sound levels, understand potential risks, and maintain healthier audio environments. Ideal for various settings, it offers a simple and effective way to stay aware of ambient noise.

**Highlights:** Real-time decibel monitoring, Animated visual ear display, Color-coded noise alerts, 1-minute average tracking, Spectrogram view, Optimized for iPhone and iPad

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

**In-app purchases:** none


## Frequently asked questions

### Is Secuyou Lock free?

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

### Is Decibel Meter dB free?

Decibel Meter dB costs $3.99, with no in-app purchases.

### Do Secuyou Lock or Decibel Meter dB have ads?

Neither Secuyou Lock nor Decibel Meter dB shows ads.

### Which is updated more often, Secuyou Lock or Decibel Meter dB?

Secuyou Lock ships an update every 3 weeks, and Decibel Meter dB every 4 months. Most recently, Secuyou Lock was updated on October 26, 2026 and Decibel Meter dB 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.*