SignalScope X vs Frequency Generator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Oscilloscope
- FFT Analyzer
- Spectrogram Analyzer
- Data Recorder
- Sound Intensity Analyzer
- Room Acoustics Analyzer
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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
Frequency Generator
This utility app provides a simple and straightforward tuning fork. It allows users to generate any frequency between 20 Hz and 20,000 Hz, limited only by the device's speaker and human hearing.
- Adjustable frequency range (20 Hz - 20,000 Hz)
- Simple and easy to use interface
- Generates audio tones
- No complex settings
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Frequency Generator - Tone and Sound Generate audio tones, explore sound frequencies, and find the right pitch with a simple, easy-to-use frequency generator. Whether you are tuning a musical instrument, checking a reference pitch, experimenting with audio frequencies, or exploring sound, this app gives you convenient control over the tone you hear. FREQUENCY GENERATOR Generate sound at an adjustable frequency and explore different pitches. Use the frequency slider or enter a value directly to find the tone you need. TONE GENERATOR WITH VOLUME CONTROL Adjust the sound volume to suit your needs. Fine-tune your listening experience while experimenting with different frequencies and pitches. TUNING FORK AND MUSICAL PITCH REFERENCE Use your phone as a digital tuning fork and pitch reference for musical practice. The standard reference tone of 440 Hz corresponds to A4, also known as concert A. This is a widely used reference for tuning musical instruments. Explore other frequencies to find the tones you need. EXPLORE AUDIO FREQUENCIES Discover how changing frequency affects the pitch of a sound. Move between lower and higher tones and experiment with different audio frequencies for music, sound exploration, and everyday listening. WHY USE FREQUENCY GENERATOR? - Adjustable sound frequency - Direct frequency input - Adjustable volume - Animated visual feedback while generating tones - Convenient audio pitch reference - Simple controls for quick access to sound settings WHO IS IT FOR? Musicians can use a reference tone while practising and tuning instruments. Music students can explore pitch and the relationship between frequency and musical notes. Audio enthusiasts can experiment with generated tones and different frequencies. Everyday users can quickly generate a tone at a frequency of their choice. SIMPLE AND EASY TO USE Open the app, select your frequency, adjust the volume, and generate your tone. Whether you need a tuning reference or a flexible frequency and sound generator, the essential controls are right at your fingertips. Download Frequency Generator and explore the world of sound, one frequency at a time.
Screenshots
Verdict
The clearest difference is in-app purchases: Frequency Generator at none against SignalScope X's 12. Frequency Generator also leads on iOS requirement (15 vs 18.6). SignalScope X's advantage is update cadence (every 3 weeks vs every 14 months) and ratings volume (23 vs 2). On price, rating, 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
Both are free to download. SignalScope X sells 12 in-app purchases, starting at $3.49 per month. Frequency Generator asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 3.0 for SignalScope X against 3.0 for Frequency Generator. That said, the two scores are not equally well evidenced: SignalScope X has 23 ratings behind it against 2, so its average is the more settled of the two.
SignalScope X ships an update every 3 weeks, Frequency Generator every 14 months. Both last shipped on October 24, 2026.
| Parameter | SignalScope X | Frequency Generator |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (23 ratings) | 3.0 (2 ratings) |
| Positive reviews | 10.2% of reviews | — |
| Number of ratings | 23 — better | 2 |
| Update frequency | Every 3 weeks — better | Every 14 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | Free — better |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 18.6 | 15 — better |
| Further details — not scored | ||
| Size | 19 MB | 7 MB |
| Age rating | 4+ | 4+ |
| Developer | Faber Acoustical, LLC | Krzysztof Gwiazda |
Customer experience
SignalScope X
Frequency Generator
Bugs and requests
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
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- 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
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- Support for Audiobus output
Frequency Generator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
SignalScope X
- 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
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- 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
- 14-day Free Trial, Pro Tool SetFree
- Basic Tool Set 2026$69.99
- Advanced Tool Set 2026$199.99
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- Advanced Tool Set 2026 from Basic$219.99
- Pro Tool Set 2026 from Advanced$309.99
- Pro Tool Set 2026 from Basic$439.99
Frequency Generator
No in-app purchases
Questions
Is SignalScope X free?
Is Frequency Generator free?
Which has better reviews, SignalScope X or Frequency Generator?
Do SignalScope X or Frequency Generator have ads?
Which is updated more often, SignalScope X or Frequency Generator?
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