# ToneCircle vs Decibel Meter

The clearest difference is rating: ToneCircle at 4.8 against Decibel Meter's 3.5. ToneCircle also leads on review sentiment (89% vs 50%) and in-app purchases (none vs 4). Decibel Meter's advantage is ratings volume (55 vs 12). On price, ads and device support there is nothing between them.

Both are free to download. Decibel Meter sells 4 in-app purchases, starting at $3.99 per 7 days. ToneCircle asks for nothing beyond the download.

ToneCircle holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 12 and 55 respectively. Written reviews point the same way: 89% of ToneCircle's written reviews are positive against 50% of Decibel Meter's.

ToneCircle ships an update every 2 weeks, Decibel Meter every 11 months. The most recent releases landed on November 3, 2026 and November 11, 2026 respectively.

## The numbers

| Metric | ToneCircle | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (12 ratings)](https://appshunter.io/ios/app/tonecircle/id1525973929/reviews)** | [3.5 (55 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105/reviews) |
| Number of ratings | 12 | **55** |
| Positive reviews | **88.9% of reviews** | 50.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 11 months |
| Monetization | **Free** | Freemium |
| Size | 1 MB | 18 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Arias Software LLC](https://appshunter.io/developer/1458265015) | [Rychard Matskevich](https://appshunter.io/developer/1395390712) |

## What reviewers say

### ToneCircle

[App page](https://appshunter.io/ios/app/tonecircle/id1525973929)

Experience music and sound visually by mapping audio frequencies to colors and musical notes. This app allows you to see the patterns within sound in a unique and immersive way.

**Highlights:** Visualizes sound frequencies, Maps frequencies to colors, Maps frequencies to musical notes, Real-time audio analysis, Immersive sound experience

**Features:** macOS Compatibility

**In-app purchases:** none


### Decibel Meter

[App page](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105)

This tool transforms your iPhone into a professional sound level meter, measuring decibels and analyzing sound frequencies. It helps identify harmful noise levels to protect your hearing and health, offering detailed insights and measurement history.

**Highlights:** Professional sound level meter, Sound frequency analysis, Noise dosimeter with standards, Accurate sound pressure measurements, Save and export measurements, Advanced measurement charts, MIN/MAX/AVG data

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Decibel Meter Premium Weekly | $3.99 | per 7 days |
| Noise Spectrum Detector VIP | $8.99 | per month |
| Noise Frequency Checker VIP | $19.99 | per 3 months |
| Sound Level Analyzer dB VIP | $29.99 | per year |


## Frequently asked questions

### Is ToneCircle free?

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

### Is Decibel Meter free?

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

### Which has better reviews, ToneCircle or Decibel Meter?

ToneCircle is rated higher. ToneCircle averages 4.8 out of 5 from 12 ratings, while Decibel Meter averages 3.5 from 55 ratings.

### Do ToneCircle or Decibel Meter have ads?

Neither ToneCircle nor Decibel Meter shows ads.

### Which is updated more often, ToneCircle or Decibel Meter?

ToneCircle ships an update every 2 weeks, and Decibel Meter every 11 months. Most recently, ToneCircle was updated on November 3, 2026 and Decibel Meter on November 11, 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.*