# SignalScope X — Dynamic Signal Analysis Tools

> Dynamic signal analysis tools for acoustics, audio, and electronics. (iPhone/iPad app by Faber Acoustical, LLC.)

- Source: https://appshunter.io/ios/app/signalscope-x/id1304775893 (this page in markdown: same URL + `.md`)
- Developer: [Faber Acoustical, LLC](https://appshunter.io/developer/284781780)
- Category: Utilities, Education
- Price: Free with in-app purchases
- Rating: 3.00/5 from 23 App Store ratings · 117 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.6 · 16 MB
- Languages: American English
- Released: 2018-01-08
- Data updated: 2026-08-27
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/signalscope-x/id1304775893/reviews.md

## What is SignalScope X?

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

## Key features

- Oscilloscope
- FFT Analyzer
- Spectrogram Analyzer
- Data Recorder
- Sound Intensity Analyzer
- Room Acoustics Analyzer

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Basic Tool Set, 1 Year | $34.99 | per year |
| Basic Tool Set, 1 Month | $3.49 | per month |
| Advanced Tool Set, 1 Year | $99.99 | per year |
| Advanced Tool Set, 1 Month | $9.99 | per month |
| Pro Tool Set, 1 Year | $249.99 | per year |
| Pro Tool Set, 1 Month | $24.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Basic Tool Set 2026 | $69.99 | one-time |
| Pro Tool Set 2026 from Basic | $439.99 | one-time |
| Pro Tool Set 2026 from Advanced | $309.99 | one-time |
| Advanced Tool Set 2026 from Basic | $219.99 | one-time |
| 14-day Free Trial, Pro Tool Set | Free | one-time |


## What do users think of SignalScope X?

Overall sentiment: negative

**Pros**

- 👍 Powerful software
- 👍 Good for professional testing
- 👍 Captures faint hums
- 👍 Works well for waveforms
- 👍 Useful for guitar debugging
- 👍 Great for live sound monitoring
- 👍 Works on multiple devices
- 👍 Good for teaching/demonstrations

**Cons**

- 💸 Expensive subscription model
- 💸 High one-time purchase cost
- 💸 Perceived as a rip-off
- 💸 Previous purchases invalidated
- 💸 Lack of upgrade path
- 💸 Subscription required for basic functions
- 💸 Overpriced compared to alternatives
- 💸 Clunky user interface
- 💸 Inaccurate SPL meter
- 💸 Takes over file types
- 💸 Limited free version

**Commonly 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
- File type conflicts
- Data scattered
- App requires subscription for basic functionality
- Old versions no longer supported/functional

**Most 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
- Support for Audiobus output

## Recent user reviews (10 of 117)

All indexed reviews: https://appshunter.io/ios/app/signalscope-x/id1304775893/reviews.md

### 1/5 — Be careful

*2026-07-08*

Unresponsive company
They charged me for the app, and now it no longer works. They have not responded. It was not inexpensive. I cannot recommend this company at all.

### 1/5 — Keeps crashing….no thanks!

*2026-06-27*

Keep crashing whenever sound changes are made.  If you enjoy rebooting, go ahead and try this.  Otherwise, move along.  (And yes, I JUST updated to a version that supposedly fixed a similar sounding crash description.  Clearly it was not fixed in my case)

### 5/5 — ADD

*2025-09-17*

A.D.

### 2/5 — Doesn’t work like it used to

*2025-06-17*

I have used this app for years, primarily as a teaching tool with my iPhone microphone. For some reason, it is no longer working. It will either start to record, then stop. Or it won’t work at all. The Faber SLM app seems to be working fine, so I’m not sure why the oscilloscope and FFT have stopped functioning. Very disappointing especially considering the price we pay for the subscription.

### 1/5 — Yet another app that requires a subscription

*2025-04-07, version 12.6*

Cannot test basic functionality without setting up a subscription. Sorry but will not subscribe to an app. Would be happy to pay a reasonable one-off payment if I had been able to test first. Potential customer lost.

### 4/5 — Powerful Software With Odd Limitation, Skimpy Manual

*2025-03-11*

I've been kicking the tires to decide whether to subscribe. Right off the bat I was mystified by the apparent lack of the ability to store and retrieve various setups (after setting up a tool and its parameters) for making different measurements and/or setting up different displays. Since there is no manual, and the meager help file doesn't address this, as best as I could determine the software just retains the setup that exists when the program is quit. That limitation seems very odd. In general, a manual would help.

### 5/5 — Amazing App.

*2025-02-17, version 12.6*

GOOD VIBES!

### 1/5 — Subscription

*2024-12-03, version 12.6*

I spent A LOT of money on this app, I haven’t used it for a while because it became subscription after an update with no warning. If the developer offered updates with incremental cost ok I get it but I feel ripped off.

### 2/5 — Takes over txt and csv files

*2024-11-16*

The app takes over basic file types on the phone and does not allow overrides.

### 3/5 — This app like most in apple appl store

*2024-10-31*

This app is cool it has a bunch of features but for mapping sound.  Any one who will need something like this alot will have desk top software that goes with their DAW, considering that fact it's significantly over priced.  They're are video editing apps with a ton of more features fur the same price, the everything version sloths first add much as the Year basic

## Frequently asked questions about SignalScope X

### What does SignalScope X do?

SignalScope X offers a suite of powerful measurement and analysis tools for applications in acoustics, audio, and electronics. It allows users to analyze signals from their device's audio input, calibrate transducers, and save measurement data in various formats.

### What are the key features of SignalScope X?

The app includes a free oscilloscope, FFT Analyzer, Spectrogram Analyzer, and XY Plotter. Advanced and Pro tool sets offer features like 3D Spectrograms, Octave-band Analysis, Data Recording, Dual-channel System Analysis, Sound Intensity Analysis, and Room Acoustics Analysis.

### How is SignalScope X priced?

SignalScope X offers a free oscilloscope tool. Additional tools are available through three tiers of subscription-based tool sets: Basic, Advanced, and Pro, catering to different user needs.

### What devices is SignalScope X compatible with?

SignalScope X is designed to work on iPhone, iPad, and Mac devices. Subscriptions are cross-compatible across these platforms.

### What are common use cases for SignalScope X?

Common use cases include sound and vibration analysis, audio system testing, electronics troubleshooting, and acoustic room measurements. Users can analyze real-time signals or pre-recorded data for detailed insights.

## Version history (last 5 releases)

### 13.1.1 — 2026-08-19

- Fixed a bug that prevented audio data export from the File Player tool.

### 13.1 — 2026-08-14

- Support for miniDSP EARS Pro. Factory-supplied microphone sensitivity and frequency response data will automatically be downloaded and applied the first time the EARS Pro audio interface is recognized by SignalScope. The system is then ready to make headphone and earphone measurements. Automatic setup for the EARS Pro analog jig requires that it be used along with the optional EARS Pro 2x2 USB audio interface. Sensitivity calibration and mic frequency response correction can be applied manually when using the jig with an alternate USB audio interface.
- Corrected a potential glitch in Octave Analyzer measurements with Z weighting and data logging enabled.
- Corrected a glitch in x-axis values for the data cursor in the lower graph of the Dual FFT Analyzer tool.
- Minor cosmetic improvements and simple user experience enhancements.

### 13.0.2 — 2026-06-26

- Corrected a potential crash with Shortcuts
- Corrected potential crashes when the audio input changes during live analysis

### 13.0.1 — 2026-06-08

- This update corrects an issue that could lead to missing data points in Octave data log exports. It also corrects an issue with continuous multi-channel recording to multiple audio files in the Data Recorder tool.
- More under-the-hood improvements have been made to improve the robustness of the software going forward.
- Minor cosmetic improvements.

### 13.0 — 2026-05-11

- Perpetual licenses for each of the Basic, Advanced, and Pro Tool Set tiers are now available within SignalScope X via in-app purchase. The in-app store has been re-designed to offer both subscriptions and perpetual licenses using the latest UI and StoreKit frameworks from Apple.
- New STI/PA tool for measuring speech intelligibility with the Speech Transmission Index (as well as the Speech Transmission Index for public address systems). The STI/PA tool can perform direct Full (Fast) STI as well as direct STIPA measurements. It was developed according to IEC standard 60268-16, Edition 5.0 (2020-09). Pro Tool Set license required.
- New Pro Feature: The Signal Generator tool now offers a STI/STIPA signal generator.
- New Pro Feature: The Octave Analyzer supports a 1/9-octave spectrum, in addition to whole and 1/3-octaves.
- New Pro Feature: The Octave Analyzer allows the filter slope for all fractional-octave-band filters to be manually selected between O3, O5, and O7. The traditional O3 slope is 18 dB per octave rolloff. O5 is 30 dB/octave and O7 is 42 dB/octave.
- New Pro Feature: The Octave Analyzer allows the output of any of the fractional-octave-band filters to be routed to an available output channel.
- The MultiTool is now available with Basic and Advanced Tool Set licenses.
- SignalScope X’s user interface has been updated to support the new liquid glass appearance on iOS and iPadOS 26.
- Faber Account access has been added to SignalScope X to check eligibility for special discounts on in-app purchases and to manage cross-platform licenses. Creating or signing in to a Faber Account is optional.
- The tab view has been removed from SignalScope X on iPhone and iPad and replaced with a tool sidebar menu. Now, to switch tools, tap on the toolbox icon in the top toolbar to open the tool menu and then tap on the name of the desired tool. On iPad, the tool menu can be kept visible or hidden, as desired.

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## More apps by Faber Acoustical, LLC

- [SignalSuite TV](https://appshunter.io/ios/app/signalsuite-tv/id1059568775)
- [SoundMeter X](https://appshunter.io/ios/app/soundmeter-x/id1348050232)
- [SignalScope Pro 2020](https://appshunter.io/ios/app/signalscope-pro-2020/id1509796235)
- [SignalScope Advanced 2020](https://appshunter.io/ios/app/signalscope-advanced-2020/id1520682182)
- [SignalScope Basic 2020](https://appshunter.io/ios/app/signalscope-basic-2020/id1520683649)

All apps by Faber Acoustical, LLC: https://appshunter.io/developer/284781780

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*