Comparison

Resonator Audio Unit vs Audio Toolbox

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

Head to head
About

Resonator Audio Unit

This audio effect plugin generates natural resonances to add warmth and fullness to instruments or recordings. It offers controls for acoustic body characteristics and includes an additional reverb effect for standalone use. The app utilizes unique, realistic algorithms for its sound shaping capabilities.

Highlights
  • Natural sounding resonances
  • Acoustic body thickness and size control
  • Resonance amount control
  • Additional reverb effect
  • Standalone app mode with Efx on/off
Features
Read full description

Resonator Audio Unit is an audio effect that creates natural sounding resonances in an acoustic body. That will add warmth and fullness to the tone of any instrument or to your record. You can control the acoustic body thickness, size and the amount of resonances. There is also additional reverb effect so you can add reflections to the sound of the resonator. This is useful if you use the app as a standalone to get your whole sound and play on your instrument via iRig or similar adapter. The app uses realistic and innovative algorithms created by me that you can not find in other software. Features of the Resonator Audio Unit: - warm and natural sounding resonances - acoustic body controls for thickness and size - resonances amount control - additional reverb effect - Efx on/off button (available when used as a stand alone app)

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.

Screenshots

Resonator Audio Unit2 screens
Audio Toolbox4 screens

Verdict

The call

The clearest difference is update cadence: Audio Toolbox at every 8 months against Resonator Audio Unit's every 38 months. Resonator Audio Unit's advantage is price ($2.99 vs $3.99) and iOS requirement (10 vs 13). On rating, ratings volume, ads and in-app purchases 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

Resonator Audio Unit costs $2.99 and Audio Toolbox $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Resonator Audio Unit against 5.0 for Audio Toolbox. Both are backed by a comparable volume of ratings — 3 and 7 respectively.

UpkeepUpdate frequency

Resonator Audio Unit ships an update every 38 months, Audio Toolbox every 8 months. The most recent releases landed on October 7, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
Resonator Audio Unit versus Audio Toolbox: the parameters behind the verdict, then further details
ParameterResonator Audio UnitAudio Toolbox
Price$2.99 — better$3.99
Rating5.0 (3 ratings)5.0 (7 ratings)
Positive reviews—100.0% of reviews
Number of ratings37 — better
Update frequencyEvery 38 monthsEvery 8 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10 — better13
Further details — not scored
Size10 MB3 MB
Age rating4+4+
DeveloperAleksandar Mlazev4Pockets.com

Customer experience

Resonator Audio Unit

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Audio Toolbox

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

In-app purchases

None

Resonator Audio Unit

No in-app purchases

None

Audio Toolbox

No in-app purchases

Questions

Is Resonator Audio Unit free?
Resonator Audio Unit costs $2.99, with no in-app purchases.
Is Audio Toolbox free?
Audio Toolbox costs $3.99, with no in-app purchases.
Which has better reviews, Resonator Audio Unit or Audio Toolbox?
Resonator Audio Unit and Audio Toolbox are both rated 5.0 out of 5 on the App Store, from 3 and 7 ratings respectively.
Do Resonator Audio Unit or Audio Toolbox have ads?
Neither Resonator Audio Unit nor Audio Toolbox shows ads.
Which is updated more often, Resonator Audio Unit or Audio Toolbox?
Resonator Audio Unit ships an update every 38 months, and Audio Toolbox every 8 months. Most recently, Resonator Audio Unit was updated on October 7, 2026 and Audio Toolbox on October 24, 2026.

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