# Toolbox PRO vs Sound Spectrum Analysis

The clearest difference is price: Sound Spectrum Analysis at Free against Toolbox PRO's $3.99. Toolbox PRO's advantage is rating (4.5 vs 3.6) and in-app purchases (none vs 1). On review sentiment, ads and device support there is nothing between them.

Sound Spectrum Analysis is free to download; Toolbox PRO costs $3.99 up front. Sound Spectrum Analysis sells 1 one-off in-app purchase. Toolbox PRO asks for nothing beyond the download.

Toolbox PRO holds the better App Store score, 4.5 against 3.6. That said, the two scores are not equally well evidenced: Toolbox PRO has 3.5K ratings behind it against 42, so its average is the more settled of the two. Written reviews point the same way: 62% of Toolbox PRO's written reviews are positive against 58% of Sound Spectrum Analysis's.

Toolbox PRO ships an update fortnightly, Sound Spectrum Analysis every 5 weeks. Both last shipped on November 6, 2026.

## The numbers

| Metric | Toolbox PRO | Sound Spectrum Analysis |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.5 (3.5K ratings)](https://appshunter.io/ios/app/toolbox-pro-smart-meter-tools/id354112909/reviews)** | [3.6 (42 ratings)](https://appshunter.io/ios/app/sound-spectrum-analysis/id1434975523/reviews) |
| Number of ratings | **3.5K** | 42 |
| Positive reviews | **61.7% of reviews** | 58.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 5 weeks |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 27 MB | 5 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SkyPaw Co., Limited](https://appshunter.io/developer/1842040687) | [Dmitriy Kharutskiy](https://appshunter.io/developer/817385891) |

## What reviewers say

### Toolbox PRO

[App page](https://appshunter.io/ios/app/toolbox-pro-smart-meter-tools/id354112909)

Transform your device into a versatile measuring toolkit. It offers a comprehensive suite of 13+ tools including a barometer, altimeter, compass, metronome, stopwatch, timer, and various levels for diverse applications.

**Highlights:** Barometer for atmospheric pressure, Altimeter for elevation above sea level, Compass for navigation, Metronome for musicians, Stopwatch with lap and split modes, Multiple timers running simultaneously, Surface and spirit levels

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Useful tools in one app
- 👍 Intuitive interface
- 🔧 Variety of measurement tools
- ⚙️ Accurate measurements
- 💡 Innovative features

**What reviewers complain about**

- 🐛 Crashes and compatibility issues
- 🔍 Inaccurate measurements
- 🔒 Privacy concerns with location access
- 💰 Paid features removed from previous versions
- 📚 Lack of instructions or guidance

**Reported bugs**

- Decibel meter missing from current version
- Ruler measurements inaccurate on newer devices
- Crashing issues with recent updates
- Barometer and altimeter not functioning properly

**Requested features**

- Temperature conversion tool
- Light meter
- Ability to calibrate tools
- Apple Watch app integration
- More customization options


### 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 Toolbox PRO free?

Toolbox PRO costs $3.99, 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, Toolbox PRO or Sound Spectrum Analysis?

Toolbox PRO is rated higher. Toolbox PRO averages 4.5 out of 5 from 3.5K ratings, while Sound Spectrum Analysis averages 3.6 from 42 ratings.

### Do Toolbox PRO or Sound Spectrum Analysis have ads?

Neither Toolbox PRO nor Sound Spectrum Analysis shows ads.

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

Toolbox PRO ships an update fortnightly, and Sound Spectrum Analysis every 5 weeks. Most recently, Toolbox PRO was updated on November 6, 2026 and Sound Spectrum Analysis on November 6, 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.*