# Decibel Meter+ Sound Level dB vs Junior.Chat

The clearest difference is ads: Junior.Chat at none against Decibel Meter+ Sound Level dB's shown. Junior.Chat also leads on device support (3 vs 1). Decibel Meter+ Sound Level dB's advantage is update cadence (every 11 days vs every 6 weeks). On price, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Decibel Meter+ Sound Level dB ships an update every 11 days, Junior.Chat every 6 weeks. The most recent releases landed on November 3, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | Decibel Meter+ Sound Level dB | Junior.Chat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/decibel-meter-plus-sound-level-db/id1593197145/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 11 days** | Every 6 weeks |
| Monetization | Ad-supported | — |
| Size | 59 MB | 76 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 17+ | 12+ |
| Developer | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) | [IT CRON LLC](https://appshunter.io/developer/1554358503) |

## What reviewers say

### Decibel Meter+ Sound Level dB

[App page](https://appshunter.io/ios/app/decibel-meter-plus-sound-level-db/id1593197145)

This app measures sound levels in decibels using your iPhone's microphone. It offers OSHA/NIOSH noise dose tracking, A/C/Z weighting, and calibration for accurate readings. Monitor workplace, neighborhood, or event noise with a clear, color-coded display.

**Highlights:** Real-time decibel measurement (0–120 dB SPL), OSHA + NIOSH 8-hour noise dose tracking, A / C / Z weighting toggle, One-tap quiet room calibration, Color-coded radial gauge, Live waveform chart, Min, Average, and Max dB tracking

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

**In-app purchases:** none


### Junior.Chat

[App page](https://appshunter.io/ios/app/juniorchat/id6689521712)

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

**In-app purchases:** none


## Frequently asked questions

### Is Decibel Meter+ Sound Level dB free?

Decibel Meter+ Sound Level dB is free to download, with no in-app purchases.

### Is Junior.Chat free?

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

### Do Decibel Meter+ Sound Level dB or Junior.Chat have ads?

Decibel Meter+ Sound Level dB shows ads; Junior.Chat does not.

### Which is updated more often, Decibel Meter+ Sound Level dB or Junior.Chat?

Decibel Meter+ Sound Level dB ships an update every 11 days, and Junior.Chat every 6 weeks. Most recently, Decibel Meter+ Sound Level dB was updated on November 3, 2026 and Junior.Chat on October 27, 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.*