# Toolbox PRO vs SignalScope X

The clearest difference is review sentiment: Toolbox PRO at 62% against SignalScope X's 10%. Toolbox PRO also leads on rating (4.5 vs 3.0) and in-app purchases (none vs 12). SignalScope X's advantage is price (Free vs $3.99). On update cadence, ads and device support there is nothing between them.

SignalScope X is free to download; Toolbox PRO costs $3.99 up front. SignalScope X sells 12 in-app purchases, starting at $3.49 per month. Toolbox PRO asks for nothing beyond the download.

Toolbox PRO holds the better App Store score, 4.5 against 3.0. That said, the two scores are not equally well evidenced: Toolbox PRO has 3.5K ratings behind it against 23, 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 10% of SignalScope X's.

Toolbox PRO ships an update fortnightly, SignalScope X every 3 weeks. The most recent releases landed on October 29, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Toolbox PRO | SignalScope X |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.5 (3.5K ratings)](https://appshunter.io/ios/app/toolbox-pro-smart-meter-tools/id354112909/reviews)** | [3.0 (23 ratings)](https://appshunter.io/ios/app/signalscope-x/id1304775893/reviews) |
| Number of ratings | **3.5K** | 23 |
| Positive reviews | **61.7% of reviews** | 10.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 3 weeks |
| Monetization | Paid | **Freemium** |
| Best chart rank | **#170** | — |
| Size | 27 MB | 19 MB |
| Requires iOS | **8.0** | 18.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [SkyPaw Co., Limited](https://appshunter.io/developer/1842040687) | [Faber Acoustical, LLC](https://appshunter.io/developer/284781780) |

## What reviewers say

### Toolbox PRO

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

**Currently charting:** #170 Top Paid · Utilities (US App Store)

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


### SignalScope X

[App page](https://appshunter.io/ios/app/signalscope-x/id1304775893)

This app provides powerful measurement and analysis tools for acoustics, audio, and electronics. It offers a free oscilloscope and subscription-based tool sets for basic, advanced, and professional needs, compatible across iPhone, iPad, and Mac.

**Highlights:** Oscilloscope, FFT Analyzer, Spectrogram Analyzer, Data Recorder, Sound Intensity Analyzer, Room Acoustics Analyzer

**Features:** Family Sharing, Vision Pro support

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Tool Set, 1 Month | $3.49 | per month |
| Advanced Tool Set, 1 Month | $9.99 | per month |
| Pro Tool Set, 1 Month | $24.99 | per month |
| Basic Tool Set, 1 Year | $34.99 | per year |
| Advanced Tool Set, 1 Year | $99.99 | per year |
| Pro Tool Set, 1 Year | $249.99 | per year |
| 14-day Free Trial, Pro Tool Set | Free | one-time |
| Basic Tool Set 2026 | $69.99 | one-time |
| Advanced Tool Set 2026 | $199.99 | one-time |
| Advanced Tool Set 2026 from Basic | $219.99 | one-time |
| Pro Tool Set 2026 from Advanced | $309.99 | one-time |
| Pro Tool Set 2026 from Basic | $439.99 | one-time |

**What reviewers like**

- 👍 Powerful software
- 👍 Good for professional testing
- 👍 Captures faint hums
- 👍 Works well for waveforms
- 👍 Useful for guitar debugging

**What reviewers complain about**

- 💸 Expensive subscription model
- 💸 High one-time purchase cost
- 💸 Perceived as a rip-off
- 💸 Previous purchases invalidated
- 💸 Lack of upgrade path

**Reported bugs**

- Recording starts and stops
- App crashes on launch
- Oscilloscope and FFT not functioning
- SPL meter inaccurate/uncalibratable
- App not working on older devices

**Requested features**

- Manual for better understanding
- Ability to store and retrieve setups
- One-off payment option
- More intuitive user interface
- Ability to change Y-axis scale


## Frequently asked questions

### Is Toolbox PRO free?

Toolbox PRO costs $3.99, with no in-app purchases.

### Is SignalScope X free?

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

### Which has better reviews, Toolbox PRO or SignalScope X?

Toolbox PRO is rated higher. Toolbox PRO averages 4.5 out of 5 from 3.5K ratings, while SignalScope X averages 3.0 from 23 ratings.

### Do Toolbox PRO or SignalScope X have ads?

Neither Toolbox PRO nor SignalScope X shows ads.

### Which is updated more often, Toolbox PRO or SignalScope X?

Toolbox PRO ships an update fortnightly, and SignalScope X every 3 weeks. Most recently, Toolbox PRO was updated on October 29, 2026 and SignalScope X on October 26, 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.*