Comparison

Audio Toolbox vs Doris by dgApps

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

Doris by dgApps

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Doris by dgApps is the app to send and receive MIDI commands from your iPhone or iPad via fully configurable touch buttons. Each Doris Project can have multiple Screens. Each Doris Screen can have multiple Buttons. Each Button can be one of nine different sizes, and each Button can be one of six different types: Note On Note Off A Button that sends Note On and Note Off MIDI commands, with the same channel and note for each command. These Buttons send a Note On command on touch and a Note Off command on the next touch, or they can be momentary, sending a Note On command on touch and a Note Off command on release. Control Change A Button that sends a Control Change MIDI command using a slider for a specific channel and specific control change number. Program Change A Button that sends a Program Change MIDI command on touch, with a configurable channel and program number. Multiple MIDI This Button type can have any number of on MIDI commands and any number of off MIDI commands. The on MIDI commands are sent on touch and the off MIDI commands are sent on a second touch, or on release if the Button is momentary. The MIDI commands can be sent all at once, or one after the other sequentially, both for the on MIDI commands and the off MIDI commands. Each MIDI command can be a Note On, Note Off, Program Change, or a Control Change command with a specified value. Flash All Buttons will flash when they receive their MIDI command, whether the command comes from another Button or from outside Doris. Flash Buttons go further in that they can be configured to flash for a specific MIDI command on a specific channel, or all MIDI commands on all channels, or any combination of commands and channels in between those two extremes. Blank Blank buttons are only visible in Edit mode. They are used to help with the layout of Buttons across the Screen. Each MIDI command is fully configurable visually: text, font, text size, text weight, text alignment, text colour, symbol, symbol colour, and background colour All configuration of Doris Projects, Screens, and Buttons is accomplished directly in the app. There’s no requirement for any other software. There is an always available MIDI screen that logs incoming MIDI commands and can send specific MIDI commands. The screen also enables MIDI using Bluetooth connections. Copious Help is available throughout Doris to explain things as you go. Doris can share DORIS files using all the usual share options, and import saved DORIS files into new Projects. Doris was successfully used with Blur at Coachella 2024, with The Script during 2024, and with Little Simz at Glastonbury 2024.

Screenshots

Audio Toolbox4 screens
Doris by dgApps4 screens

Verdict

The call

The clearest difference is price: Doris by dgApps at Free against Audio Toolbox's $3.99. Doris by dgApps also leads on update cadence (every 3 weeks vs every 8 months). Audio Toolbox's advantage is in-app purchases (none vs 2) and iOS requirement (13 vs 17.5). On 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

CostPrice · In-app purchases · Ads · Monetization

Doris by dgApps is free to download; Audio Toolbox costs $3.99 up front. Doris by dgApps sells 2 in-app purchases, starting at $8.99 per month. Audio Toolbox asks for nothing beyond the download.

UpkeepUpdate frequency

Audio Toolbox ships an update every 8 months, Doris by dgApps every 3 weeks. The most recent releases landed on October 24, 2026 and October 29, 2026 respectively.

Scorecard4 real differences · 6 level
Audio Toolbox versus Doris by dgApps: the parameters behind the verdict, then further details
ParameterAudio ToolboxDoris by dgApps
Price$3.99Free — better
Rating5.0 (7 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings7 — better—
Update frequencyEvery 8 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS13 — better17.5
Further details — not scored
Size3 MB8 MB
Age rating4+4+
Developer4Pockets.comdgApps

In-app purchases

None

Audio Toolbox

No in-app purchases

2 purchases

Doris by dgApps

Subscriptions2
  • Doris Monthly Subscription$8.991 Month
  • Doris Annual Subscription$89.991 Year

Questions

Is Audio Toolbox free?
Audio Toolbox costs $3.99, with no in-app purchases.
Is Doris by dgApps free?
Doris by dgApps is free to download, with in-app purchases available.
Do Audio Toolbox or Doris by dgApps have ads?
Neither Audio Toolbox nor Doris by dgApps shows ads.
Which is updated more often, Audio Toolbox or Doris by dgApps?
Audio Toolbox ships an update every 8 months, and Doris by dgApps every 3 weeks. Most recently, Audio Toolbox was updated on October 24, 2026 and Doris by dgApps on October 29, 2026.

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