# uSpectrumX vs Sound Spectrum Analysis

The clearest difference is rating: uSpectrumX at 5.0 against Sound Spectrum Analysis's 3.6. uSpectrumX also leads on in-app purchases (none vs 1) and iOS requirement (9.0 vs 15.6). Sound Spectrum Analysis's advantage is ratings volume (42 vs 1) and update cadence (every 5 weeks vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Sound Spectrum Analysis sells 1 one-off in-app purchase. uSpectrumX asks for nothing beyond the download.

uSpectrumX holds the better App Store score, 5.0 against 3.6. That said, the two scores are not equally well evidenced: Sound Spectrum Analysis has 42 ratings behind it against 1, so its average is the more settled of the two.

uSpectrumX ships an update every 3 months, Sound Spectrum Analysis every 5 weeks. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | uSpectrumX | Sound Spectrum Analysis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/uspectrumx/id1318581445/reviews)** | [3.6 (42 ratings)](https://appshunter.io/ios/app/sound-spectrum-analysis/id1434975523/reviews) |
| Number of ratings | 1 | **42** |
| Positive reviews | — | 58.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 25 MB | 5 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [United Power Research Technology Corporation](https://appshunter.io/developer/1501316337) | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) |

## What reviewers say

### uSpectrumX

[App page](https://appshunter.io/ios/app/uspectrumx/id1318581445)

This application connects wirelessly to a handheld spectrometer to remotely analyze light sources. It displays detailed spectral data, light source information, and allows for data saving and sharing.

**Highlights:** Wireless Wi-Fi connection to spectrometer, Remote light source analysis, Spectrum, CIE1931, CIE1976, CRI, TM-30 diagrams, Detailed light source information (LUX, CCT, CRI), Save and share captured data, Open UPRTek .xls files

**Features:** macOS Compatibility

**In-app purchases:** none


### Sound Spectrum Analysis

[App page](https://appshunter.io/ios/app/sound-spectrum-analysis/id1434975523)

Analyze sound spectrums in real-time using your device's microphone. This tool offers detailed frequency and amplitude scales, various window functions, and octave band analysis. It can also function as a noise level meter and allows for data export and saving of measurements.

**Highlights:** Real-time sound spectrum analysis, Fast Fourier Transform (FFT) with adjustable size, Linear and logarithmic frequency/amplitude scales, Octave band analysis (1/1, 1/3, 1/6, 1/12), Multiple window functions, A- and C-Weightings, Sound level meter (dB SPL)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full version | $2.99 | one-time |


## Frequently asked questions

### Is uSpectrumX free?

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

### Is Sound Spectrum Analysis free?

Sound Spectrum Analysis is free to download, with in-app purchases available.

### Which has better reviews, uSpectrumX or Sound Spectrum Analysis?

uSpectrumX is rated higher. uSpectrumX averages 5.0 out of 5 from 1 ratings, while Sound Spectrum Analysis averages 3.6 from 42 ratings.

### Do uSpectrumX or Sound Spectrum Analysis have ads?

Neither uSpectrumX nor Sound Spectrum Analysis shows ads.

### Which is updated more often, uSpectrumX or Sound Spectrum Analysis?

uSpectrumX ships an update every 3 months, and Sound Spectrum Analysis every 5 weeks. Most recently, uSpectrumX was updated on November 2, 2026 and Sound Spectrum Analysis on November 4, 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.*