Comparison

Toolbox PRO vs SignalScope X

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Toolbox PRO

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
Currently charting
Read full description

The most handy measuring tool kit in the world. Turning your iPhone or iPad into a multi functional measuring device with: metronome, stopwatch, timer, seismometer, ruler, surface level and many more. Currently, there are 13 measuring tools + Flashlight in the tool box: - BAROMETER It gives you a nice and clear local atmospheric pressure, obtained from the barometric sensor in your device - ALTIMETER This tool takes advantage of the built in GPS to give you the precise elevation above the sea level. - COMPASS A pretty and well-made compass for navigation, traveling and direction reference purposes. - TESLAMETER It takes advantage of the built-in magnetometer in your iPhone/iPod touch, allows you to monitor the strength of magnetic field all around. There are a range of real-life applications for this useful item, such as: metal detector, AC magnetic fields, or finding low-magnetic places for sleeping - METRONOME It is the most precise and stable metronome on the app store. Whether you are a musician, a music teacher, a beginner at playing music or even a golfer, this tool provides you a set of powerful features that can satisfy all your needs. - STOPWATCH Whenever you need a precise and professional stopwatch for sport activities like: sprints, jogging, this tool is a must have. Among its features are: intuitive interface, lap and split modes support, or send log results to your email - TIMER There are unlimited applications of using timer in daily life, such as: egg timer, tea timer, cooking, alarm clock, etc. The timer tool satisfies all of those needs by many of its features: up to 5 timers running simultaneously, count down and count up support, intuitive and convenient duration setup using preset and gestures - SEISMOMETER Taking advantage of the built-in accelerometer in your iPhone, this tool detects and visualizes any vibrations and moves of the iPhone. So, why not using this excellent feature to help your iPhone self-protected like a car when combined with an alarm? Or another great application is to test how smooth the car is on a test drive - PLUMB BOB This is an instrument to check if an object is perfectly vertical/plumb and has been used since the time of the ancient Egyptians. It suits any types of your needs, such as: hanging objects, carpenter work, brick layer or building construction - SURFACE LEVEL This tool facilitates the measurement of the slope of whatever surface you want to check. Most importantly, its accuracy is ensured at the maximum level by the support to different sensitivities that allow you to detect subtle slopes (floor leveling, furniture arrangement,..) - SPIRIT/BUBBLE LEVEL It is a simple but extremely useful tool in the set to check if an object is balanced. Its applications range from entertained purposes such as checking pool billiard tables in the bar to serious usages like constructions, carpenter, etc - RULER The ruler helps you precisely know the lengths of objects all around you, such as pens, tables, pictures. We built it to become even more than just a normal ruler: longest distance measuring capability, and up to 6 units support - PROTRACTOR Have you ever forgotten your protractor at school or when you urgently look for a protractor to measure any kind of angles in real life?

About

SignalScope X

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
Read full description

SignalScope X offers a range of powerful measurement and analysis tools to enhance your productivity in areas such as acoustics (sound and vibration), audio, electronics, and electroacoustics. SignalScope X includes a free oscilloscope tool. SignalScope X makes additional tools available via 3 tiers of subscription-based tool sets to meet your basic, advanced, and professional needs. Each subscription works on your iPhone, iPad, and Mac. Features: - Analyze signals coming from the Mac or iOS device’s current audio input device. - Assign engineering units to your input signals and calibrate external transducers for accurate measurements. - Assign input channel units and sensitivities for individual USB Audio devices. - Connect lab-grade microphones and sensors to your Mac, iPad, or iPhone with suitable interface hardware for precise measurements. - SignalScope offers enhanced support for select hardware from Digiducer, The Modal Shop, and miniDSP. - Nominal acoustic sensitivities included for iPhone and iPad built-in microphones, voltage sensitivities for headset input (including the standard Lightning-to-headset adapter). - Manually switch between available audio input and output sources. - Load microphone frequency response data (FRD) and apply frequency response correction (FRC) to FFT-based measurements. - Manually adjust audio sample rates, even up to 768 kHz, depending on hardware. - Save acquired measurement data to CSV, TXT (tab-delimited), or MAT files. - Save high-resolution analyzer display images to PDF files. - Retrieve your data files from your device via Files (iCloud Drive), iTunes File Sharing, or through a web browser on another device. Files may also be opened in other compatible apps (e.g. Mail, Notes, Numbers, Dropbox, etc). Basic Tools: - Oscilloscope - MultiTool - Powerful data monitoring and project management (Add 2-6 subtools, depending on screen size, and save configurations for easy recall at a later time.) - FFT Analyzer - Spectrum analyzer with user-settable frequency limits and input triggering - 2D Real-time Spectrogram Analyzer - XY Plotter - Create Lissajous curves or visualize your stereo mix - Stereo Signal Generator Advanced Tools: (Advanced Tool Set also includes basic tools) - 3D Real-time Spectrogram Analyzer - Stunning live visualization of incoming data - Octave-band Analyzer - Whole and 1/3-octave RTA - Level Meter - Overall signal level meter - Max Levels - Traffic-light-style monitoring - Noise Dosimeter - Data Recorder - Stream up to 8 channels to WAV, AIF, or CAF audio files - Multi-channel Audio File Player - Analyze pre-recorded data Pro Tools: (Pro Tool Set subscription includes all tools) - Dual-channel System Analyzer (Dual FFT analysis with support for Frequency Response Magnitude/Phase, Phase Delay, Group Delay, Coherence, Impulse Response and Cross-Correlation) - Sound Intensity Analyzer - With a suitable p-p probe, measure sound intensity and acoustic particle velocity spectra (narrowband and whole or 1/3-octave bands) and time waveforms. - Room Acoustics Analyzer (T20, T30, T60, nonlinearity, EDT, Early Decay Time, Center Time, Clarity, and Definition in various frequency bands, adjustable Schroeder integration limits) - Polar Plot - Generate beautiful high-resolution plots of polar data. - STI/PA Analyzer - Direct STI and STIPA measurements Additional Pro Features: - User-defined custom metadata in saved audio and data files - Data logging support in the Level Meter, Octave Analyzer, and Noise Dosimeter - Percentile exceeded sound levels in the Level Meter and Octave Analyzer - NC, RNC, and NR references curves, NC, SIL, and NR values in the Octave Analyzer - Voltage decibel levels can be displayed in dBV or dBu Subscription Terms: - https://www.faberacoustical.com/apps/subscriptions/terms.html Privacy Policy: - https://www.faberacoustical.com/about/privacy.html Terms and Conditions for FaberAcoustical.com: - https://www.faberacoustical.com/about/terms.html

Screenshots

Toolbox PRO4 screens
SignalScope X4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard8 real differences · 3 level
Toolbox PRO versus SignalScope X: the parameters behind the verdict, then further details
ParameterToolbox PROSignalScope X
Price$3.99Free — better
Rating4.5 (3.5K ratings) — better3.0 (23 ratings)
Positive reviews61.7% of reviews — better10.2% of reviews
Number of ratings3.5K — better23
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFreemium — better
Best chart rank#155 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS8.0 — better18.6
Further details — not scored
Size27 MB19 MB
Age rating4+4+
DeveloperSkyPaw Co., LimitedFaber Acoustical, LLC

Customer experience

Toolbox PRO

All ratings3,524 ratings
Positive88.3%
Neutral3.9%
Negative7.8%
Written reviews824 reviews
Positive61.7%
Neutral8.0%
Negative30.3%

SignalScope X

All ratings23 ratings
Positive47.8%
Neutral4.3%
Negative47.8%
Written reviews118 reviews
Positive10.2%
Neutral2.5%
Negative87.3%

User reviews

Toolbox PRO

From 3.5K App Store ratings

What we love

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

Room to improve

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

SignalScope X

From 23 App Store ratings

What we love

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

Room to improve

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

Bugs and requests

Toolbox PRO

Reported bugs

4 issues
  • 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

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

SignalScope X

Reported bugs

9 issues
  • Recording starts and stops
  • App crashes on launch
  • Oscilloscope and FFT not functioning
  • SPL meter inaccurate/uncalibratable
  • App not working on older devices
Show 4 more
  • File type conflicts
  • Data scattered
  • App requires subscription for basic functionality
  • Old versions no longer supported/functional

Requested features

6 requests
  • Manual for better understanding
  • Ability to store and retrieve setups
  • One-off payment option
  • More intuitive user interface
  • Ability to change Y-axis scale
Show 1 more
  • Support for Audiobus output

In-app purchases

None

Toolbox PRO

No in-app purchases

12 purchases

SignalScope X

Subscriptions6
  • Basic Tool Set, 1 Month14 Days trial$3.491 Month
  • Advanced Tool Set, 1 Month14 Days trial$9.991 Month
  • Pro Tool Set, 1 Month14 Days trial$24.991 Month
Show 3 more
  • Basic Tool Set, 1 Year14 Days trial$34.991 Year
  • Advanced Tool Set, 1 Year14 Days trial$99.991 Year
  • Pro Tool Set, 1 Year14 Days trial$249.991 Year
One-time6
  • 14-day Free Trial, Pro Tool SetFree
  • Basic Tool Set 2026$69.99
  • Advanced Tool Set 2026$199.99
Show 3 more
  • Advanced Tool Set 2026 from Basic$219.99
  • Pro Tool Set 2026 from Advanced$309.99
  • Pro Tool Set 2026 from Basic$439.99

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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