Comparison

Audio Toolbox vs FAC Fizzica

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

Head to head
About

Audio Toolbox

This app provides a comprehensive suite of audio analysis tools, including a tone generator, oscilloscope, and FFT analysis engine. It allows users to create and analyze various waveforms, detect frequencies, and tune instruments with high accuracy.

Highlights
  • Tone Generator (20Hz-22KHz)
  • Multiple Waveform Options
  • Fast Fourier Analysis
  • Audio Oscilloscope
  • Frequency and Note Detection
  • SPL Meter with LEQ
  • CSV Data Export
Features
Read full description

Audio Toolbox is a suite of audio analysis tools for the iPhone and iPad. It comprises both audio waveform generators as well as a highly accurate Fast Fourier analysis engine, an audio oscilloscope and various frequency detection and tuning tools. The Tone Generator allows you to create anything from a simple sine, triangle, square, or sawtooth waveform as well as white and pink noise. It also supports log and linear sweep tones with definable range and level and complex wave construction using sine waves. The later is great for teaching audio theory with its DTMF and complex tone generation tools you can build complex waveforms and then analyse their component parts using FFT and the oscilloscope. Build DTMF, triangle, square or saw waves using multiple sine waves etc. The Audio Oscilloscope allows you to analyse directly from the tone generator or microphone. The scope features both free running and single shot modes with adjustable triggering options. The single shot mode automatically starts and stops capturing when short bursts of sound exceed a threshold. The oscilloscope also features a simple measuring tool to help measure duration and frequency of a waveform. The FFT Analysis section provides both Linear, Logarithmic as well as 1:1, 1:3 and 1:6 Octave modes. There is also an SPL meter complete with LEQ options and A/C weighting, log and linear Spectrograph and Mixer EQ modes for setting up audio mixers. All screens support 10x zoom, full screen and pause modes to aid analysis. There are also specific modes to detect peak frequencies, musical notes with cents offset, perfect for instrument tuning. Definable calibration tuning allows you to tune +/- 40Hz. Features: •20Hz-22KHz Tone Generator. •Sine, Square, Saw, Triangle, Sweep and MultiTone options. •Accurate 8K Fast Fourier Analysis. •32bit / 44KHz floating point audio sampling. •Standard ANSI/IEC A and C weighting curves. •Up to 64x oversampling. •Smoothing (alternative to averaging). •Automatic noise cancellation. •Automatic peak note / frequency and octave display. •Narrow band Linear and Logarithmic scalable displays. •Spectrogram display with Log and Linear Modes. •1:1, 1:3 and 1:6 octave display modes. •1:1, 1:3 and 1.6 Mixer tuning modes. •SPL (Sound Pressure Level) display. •Max, Min and Peak level capture. •LEQ Mode (Equivalent Continuous Sound Level). •Variable definable decibel scales. •Touch screen display of nearest point with frequency and decibel readout. •Audio Oscilloscope - Free Running and One Shot modes. •0.1 to 1000Hz timebase. •0.25-50x scope Magnification. •Definable trigger (leading and trailing edge). •10x zoom and full screen modes. •Pause facility freezes the live trace to aid analysis of data. •Camera Roll capture facility. •Export and Email CSV data from FFT or Scope. •Built in web server for transferring files. •Capture peaks over time facility. •Works on both iPhone and iPads.

About

FAC Fizzica

This app infuses audio with dynamic digital textures and movement through audio-rate modulation. It features an integrated envelope follower for expressive sound shaping and supports various modulation sources for unique sonic transformations. Optimize your workflow with an intuitive XY control pad and visual spectrum display.

Highlights
  • Digital texture infusion
  • Integrated envelope follower
  • Audio-rate modulation
  • Sidechain support
  • XY control pad
  • Spectrum display
  • MIDI control
Features
Read full description

• Infuse your sound with digital artifact textures • Integrated envelope follower for dynamic sound expression • Supports noises, oscillators, and internal/external audio modulation models • Side mix control to balance between fully processed signal and sidebands • Sidechain support: external envelope follower and audio model • Optimized workflow with an easy-to-use XY control pad • Spectrum display of the output signal • MIDI control: Envelope via CC, main frequency and filter cutoff via notes • Extended version of FAC Punchlab's Fizz module • Advanced Responsive Design, portrait and landscape views • Universal Purchase: AUv3 for iOS (iPad/iPhone), macOS and Vision Pro Infuse your sound with dynamic digital textures and movement using audio-rate modulation. FAC Fizzica extends FAC Punchlab's Fizz module, maintaining its intuitive design while introducing advanced features for extensive sound shaping. FAC Fizzica is your go-to solution for achieving a vintage lo-fi aesthetic and enhancing audio by adding digital noise artifacts that dynamically respond to your audio input. Ideal for refining basslines, pads, drum loops, and any elements requiring organic and expressive transformations. The plugin offers dynamic expression thanks to its envelope follower, an essential processor in sound design that effectively transforms static sounds into dynamic motion. The envelope follower can monitor the audio input, the sidechain input, a dedicated automatable parameter, or a MIDI CC message. You can adjust the modulation depth for each controlled parameter, precisely controlling how the envelope affects them. To provide a wide variety of textures and timbres, the plugin offers several models. The noise models introduce noisy artifacts, while the sine and triangle models enhance harmonic and tonal richness reminiscent of FM synthesis or RM modulation. The final models allow the use of either the internal or external audio signal (sidechain) as a modulator to affect your carrier signal, offering an interesting method to subtly blend the characteristics of one sound with another. Another standout feature of FAC Fizzica is the sideband control, which adjusts the balance between the processed signal and the isolated sidebands generated by the audio rate modulation. At maximum, only the sidebands are audible! Additionally, a built-in low-pass filter refines the tonal color of the digital textures. The workflow is optimized for simplicity and intuitiveness, featuring a central XY control pad for precise control, accompanied by a detailed visual representation of the envelope signal and all the modulations. Additionally, a spectrum viewer displays the audio output, providing clear visual feedback as you craft your audio to perfection. The plugin comes with two extensions, both audio effects, but the second one also supports MIDI input to control the main frequency and the filter cutoff with MIDI notes, as well as the envelope follower with MIDI CC messages. This is an AUv3 Effect and requires a compatible host to work The documentation is available at fredantoncorvest.com/FAC_Fizzica.html

Screenshots

Audio Toolbox4 screens
FAC Fizzica3 screens

Verdict

The call

The clearest difference is in-app purchases: Audio Toolbox at none against FAC Fizzica's 3. Audio Toolbox also leads on price ($3.99 vs $9.99). On rating, review sentiment, ratings volume and update cadence 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

Audio Toolbox costs $3.99 and FAC Fizzica $9.99 up front. FAC Fizzica sells 3 one-off in-app purchases. Audio Toolbox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Audio Toolbox against 5.0 for FAC Fizzica. Both are backed by a comparable volume of ratings — 7 and 8 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Audio Toolbox ships an update every 8 months, FAC Fizzica every 7 months. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Audio Toolbox versus FAC Fizzica: the parameters behind the verdict, then further details
ParameterAudio ToolboxFAC Fizzica
Price$3.99 — better$9.99
Rating5.0 (7 ratings)5.0 (8 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings78 — better
Update frequencyEvery 8 monthsEvery 7 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Mac — better
Requires iOS1313.0
Further details — not scored
Size3 MB3 MB
Age rating4+4+
Developer4Pockets.comFrederic Corvest

Customer experience

Audio Toolbox

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

FAC Fizzica

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Audio Toolbox

No in-app purchases

3 purchases

FAC Fizzica

One-time3
  • Small Tip$1.99
  • Medium Tip$4.99
  • Large Tip$14.99

Questions

Is Audio Toolbox free?
Audio Toolbox costs $3.99, with no in-app purchases.
Is FAC Fizzica free?
FAC Fizzica costs $9.99, and also offers in-app purchases.
Which has better reviews, Audio Toolbox or FAC Fizzica?
Audio Toolbox and FAC Fizzica are both rated 5.0 out of 5 on the App Store, from 7 and 8 ratings respectively.
Do Audio Toolbox or FAC Fizzica have ads?
Neither Audio Toolbox nor FAC Fizzica shows ads.
Which is updated more often, Audio Toolbox or FAC Fizzica?
Audio Toolbox ships an update every 8 months, and FAC Fizzica every 7 months. Most recently, Audio Toolbox was updated on November 6, 2026 and FAC Fizzica on October 30, 2026.

Other comparisons