Audio Toolbox vs PanDualay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Tone Generator (20Hz-22KHz)
- Multiple Waveform Options
- Fast Fourier Analysis
- Audio Oscilloscope
- Frequency and Note Detection
- SPL Meter with LEQ
- CSV Data Export
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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.
PanDualay
This audio effect plugin offers a stereo delay with a variable left/right delay time ratio. It features independent auto-panning on delayed repeats for enhanced stereo movement and an analog-flavored sound.
- Stereo delay with variable left/right time ratio
- Independent auto-pan on delayed repeats
- Analog-flavored sound
- Low-pass filter on delay repeats
- Stereo modulation
- Adjustable regeneration (feedback)
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PanDualay Stereo Panning Delay (AUv3) PanDualay is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic or GarageBand. Overview PanDualay is an analog-flavoured stereo delay wih a variable left / right delay time ratio. In addition to stereo modulation and a LPF, PanDualay has an independent auto-pan that's applied to the delayed repeats only, giving an additional sense of stereo movement. PanDualy works especially well on lead / mono synth type sounds and can get pretty spacey! Parameters Active - Toggles the effect On or Off. Note that when you set the effect to Off, you will still hear the delay repeats, but your input signal is no longer fed into the delay processing. This is a similar idea to the "trails" feature in many delay effects units and pedals. Delay - Sets the base delay time between 50ms and 2 seconds. Regen - Sets the regeneration or feedback of the delay repeats up to 100% "endless" repeats. Note that at high Regen levels, the sound will appear to degrade in quality and become "washed-out" or "murky". This is intentional, and an attempt to capture the sound of analog delays with limited fidelity. Compression and limiting are also applied internally to prevent excessive build-up, which can also result in a "crunchy" sound at extreme settings as the repeats are squashed each time they're layered on top of each other. Again, this tends to be a sonic characteristic of analog and tape-based delays. Ratio - Sets a delay time multiplier for the left / right channels between 1 and 2. For example, a base Delay time of 500ms and a ratio of 1.5 : 1, will result in the left channel being delayed by 750ms and the right channel by 500ms. Interesting effects can be achieved by using non-standard ratios. For example, 1.62 is approximately the Golden Ratio, and at high Regen values can produce an almost reverb-like sonic wash! Pan - Sets the frequency of the auto-pan LFO. Note for the effect to be more obvious, the Ratio should be set to something other than 1 : 1. Mod - Applies a variable amount of stereo modulation to the delayed sound. LPF - Sets the cutoff frequency of a lowpass filter applied to the delay repeats. Reduce the LPF control for a darker echo sound. Mix - Sets the level of the delayed signal. Please note the dry / input signal is always present. If the name sounds familiar, PanDualay is an improved version of the PANDUALAY module developed for Voltage Modular by Waverley Instruments. For more info and support please visit: www.waverley-instruments.com/robjackson
Screenshots
Verdict
The clearest difference is update cadence: PanDualay at every 2 days against Audio Toolbox's every 8 months. PanDualay also leads on price ($1.99 vs $3.99). On rating, review sentiment, ratings volume and ads 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
Audio Toolbox costs $3.99 and PanDualay $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Audio Toolbox against 5.0 for PanDualay. Both are backed by a comparable volume of ratings — 7 and 5 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
Audio Toolbox ships an update every 8 months, PanDualay every 2 days. The most recent releases landed on November 6, 2026 and October 30, 2026 respectively.
| Parameter | Audio Toolbox | PanDualay |
|---|---|---|
| Price | $3.99 | $1.99 — better |
| Rating | 5.0 (7 ratings) | 5.0 (5 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 7 — better | 5 |
| Update frequency | Every 8 months | Every 2 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 13 | 12.0 — better |
| Further details — not scored | ||
| Size | 3 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | 4Pockets.com | Rob Jackson |
Customer experience
Audio Toolbox
PanDualay
In-app purchases
Audio Toolbox
No in-app purchases
PanDualay
No in-app purchases









