# Spectrolite vs Noise Guru

The clearest difference is in-app purchases: Noise Guru at none against Spectrolite's 1. Noise Guru also leads on update cadence (monthly vs every 8 months) and ratings volume (360 vs 64). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Spectrolite sells 1 one-off in-app purchase. Noise Guru asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for Spectrolite against 4.6 for Noise Guru. That said, the two scores are not equally well evidenced: Noise Guru has 360 ratings behind it against 64, so its average is the more settled of the two. Written reviews are what separate them: 83% of Spectrolite's written reviews are positive against 88% of Noise Guru's.

Spectrolite ships an update every 8 months, Noise Guru monthly. The most recent releases landed on October 25, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Spectrolite | Noise Guru |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (64 ratings)](https://appshunter.io/ios/app/spectrolite/id1480240180/reviews)** | [4.6 (360 ratings)](https://appshunter.io/ios/app/noise-guru-decibel-meter/id6444836813/reviews) |
| Number of ratings | 64 | **360** |
| Positive reviews | 83.3% of reviews | **88.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 1 MB | 15 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Waxing Wave](https://appshunter.io/developer/392942046) | [Andrei Serykh](https://appshunter.io/developer/1626886894) |

## 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

**Features:** Vision Pro support

**In-app purchases (1)**

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


### Noise Guru

[App page](https://appshunter.io/ios/app/noise-guru-decibel-meter/id6444836813)

Measure sound levels with precision to understand your environment and protect your hearing. Identify loud noises, monitor noise pollution, and find quiet spaces for recording. Features include a decibel dosimeter, background noise measurement, and geo-tagged recordings.

**Highlights:** Precise sound level metering (SPL), DB Dosimeter for noise exposure tracking, Background noise measurement, Noise pollution monitoring, Geo-tagged noise recordings, Unlimited recording duration

**In-app purchases:** none

**What reviewers like**

- 👍 Effective tool
- 👍 Clean interface
- 👍 Allows measuring loudness
- 👍 Visually appealing and easy to use
- 👍 Efficient and effective

**What reviewers complain about**

- 🐛 Accuracy issues compared to other apps
- 🔋 Can't play audio while using the app

**Reported bugs**

- Forced to leave a review to use the app
- Can't delete max values

**Requested features**

- Add frequency meter
- Add option to reset max/min values


## Frequently asked questions

### Is Spectrolite free?

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

### Is Noise Guru free?

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

### Which has better reviews, Spectrolite or Noise Guru?

Spectrolite is rated higher. Spectrolite averages 4.8 out of 5 from 64 ratings, while Noise Guru averages 4.6 from 360 ratings.

### Do Spectrolite or Noise Guru have ads?

Neither Spectrolite nor Noise Guru shows ads.

### Which is updated more often, Spectrolite or Noise Guru?

Spectrolite ships an update every 8 months, and Noise Guru monthly. Most recently, Spectrolite was updated on October 25, 2026 and Noise Guru on October 22, 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.*