Comparison

Audio Toolbox vs SideChain AUv3

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

SideChain AUv3

Create a classic EDM pumping effect with tempo-synced volume ducking. This app offers full parameter control for automation and allows saving/loading custom presets. Fine-tune your audio envelope with adjustable floor, delay, curve, and release settings.

Highlights
  • Tempo-synced volume ducking
  • Full parameter automation
  • Save and load presets
  • Adjustable ADSR envelope controls
  • EDM pumping effect
Read full description

Simple tempo-synced volume envelope for that classic EDM pumping effect. All parameters exposed for automation. The default setting will probably do what you need, but you can also save/load presets. Set floor value, delay, curve, release point - control the envelope like a standard ADSR __ If you're having an issue, please email me at support@scalenumbers.com rather than leaving a review, as apple doesn't send developers any alerts when reviews are left, so I won't know you've tried to contact me.

Screenshots

Audio Toolbox4 screens
SideChain AUv31 screens

Verdict

The call

The clearest difference is update cadence: SideChain AUv3 at every 3 days against Audio Toolbox's every 8 months. SideChain AUv3 also leads on price ($2.99 vs $3.99). Audio Toolbox's advantage is ratings volume (7 vs 1) and iOS requirement (13 vs 15.0). On rating, ads, in-app purchases and monetization model 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 SideChain AUv3 $2.99 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 Audio Toolbox against 5.0 for SideChain AUv3. That said, the two scores are not equally well evidenced: Audio Toolbox has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Audio Toolbox ships an update every 8 months, SideChain AUv3 every 3 days. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

Scorecard4 real differences · 6 level
Audio Toolbox versus SideChain AUv3: the parameters behind the verdict, then further details
ParameterAudio ToolboxSideChain AUv3
Price$3.99$2.99 — better
Rating5.0 (7 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings7 — better1
Update frequencyEvery 8 monthsEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13 — better15.0
Further details — not scored
Size3 MB16 MB
Age rating4+4+
Developer4Pockets.comScale Degrees LTD

Customer experience

Audio Toolbox

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

SideChain AUv3

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Audio Toolbox

No in-app purchases

None

SideChain AUv3

No in-app purchases

Questions

Is Audio Toolbox free?
Audio Toolbox costs $3.99, with no in-app purchases.
Is SideChain AUv3 free?
SideChain AUv3 costs $2.99, with no in-app purchases.
Which has better reviews, Audio Toolbox or SideChain AUv3?
Audio Toolbox and SideChain AUv3 are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.
Do Audio Toolbox or SideChain AUv3 have ads?
Neither Audio Toolbox nor SideChain AUv3 shows ads.
Which is updated more often, Audio Toolbox or SideChain AUv3?
Audio Toolbox ships an update every 8 months, and SideChain AUv3 every 3 days. Most recently, Audio Toolbox was updated on October 3, 2026 and SideChain AUv3 on October 6, 2026.

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