# Spectrolite vs Decibel Meter

The clearest difference is rating: Spectrolite at 4.8 against Decibel Meter's 3.5. Spectrolite also leads on review sentiment (83% vs 50%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Spectrolite sells 1 one-off in-app purchase and Decibel Meter sells 4 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Spectrolite holds the better App Store score, 4.8 against 3.5. Both are backed by a comparable volume of ratings — 51 and 54 respectively. Written reviews point the same way: 83% of Spectrolite's written reviews are positive against 50% of Decibel Meter's.

Spectrolite ships an update every 8 months, Decibel Meter every 11 months. The most recent releases landed on September 23, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Spectrolite | Decibel Meter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (51 ratings)](https://appshunter.io/ios/app/spectrolite/id1480240180/reviews)** | [3.5 (54 ratings)](https://appshunter.io/ios/app/decibel-meter-sound-analyzer/id1579747105/reviews) |
| Number of ratings | 51 | **54** |
| Positive reviews | **83.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 11 months |
| Monetization | Free with in-app purchases | Freemium |
| Size | 1 MB | 18 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Waxing Wave](https://appshunter.io/developer/392942046) | [Rychard Matskevich](https://appshunter.io/developer/1395390712) |

## What reviewers say

### Spectrolite

[App page](https://appshunter.io/ios/app/spectrolite/id1480240180)

This app visualizes sound in real-time using various spectrogram types. Explore detailed audio data with intuitive touch controls and adjustable parameters. An optional purchase unlocks advanced measurement tools.

**Highlights:** Real-time spectrogram visualization, Constant-Q, linear, and mel frequency scales, Full human hearing frequency range, Intuitive touch panning and zooming, Adjustable gain, Q, and other parameters, Pro version: grids, scales, spectrum view, tap-to-measure

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro | $4.99 | one-time |


### 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 Spectrolite free?

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

### Is Decibel Meter free?

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

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

Spectrolite is rated higher. Spectrolite averages 4.8 out of 5 from 51 ratings, while Decibel Meter averages 3.5 from 54 ratings.

### Do Spectrolite or Decibel Meter have ads?

Neither Spectrolite nor Decibel Meter shows ads.

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

Spectrolite ships an update every 8 months, and Decibel Meter every 11 months. Most recently, Spectrolite was updated on September 23, 2026 and Decibel Meter on September 20, 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.*