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Pure Data vs SynthMaster 3

Pure Data

puredata.info

SynthMaster 3

kv331audio.com

Side by side

FigurePure DataSynthMaster 3
Price fromFreeFree
Free planYesYes
Free trial—Yes
Open sourceYes—
WindowsYesYes
macOSYesYes
LinuxYes—
iOSYesYes
AndroidYes—
APIYes—
Self-hostedYes—
Plans published29
Spec score · Sound Design Software8.4 (#6)8.4 (#7)
Documentation depthThe installed application provides object help patches with examples and comments, according to an independent programmer review.KV331’s downloads page exposes a SynthMaster 2.8 manual, while an independent 2026 report says written SynthMaster 3 documentation was absent and an unofficial manual was created.
Rating on Apple App StorePdParty is rated 4.8 out of 5 from 8 ratings.4.7 out of 5 from 62 ratings.
What it doesPure Data is a free real-time computer music and multimedia system built around visual patching.SynthMaster 3 is KV331 Audio’s flagship semi-modular software synthesizer for sound design and music production.

Plans

Pure Data

  • Pure DataFree
  • Pure Data (Pd)Free

Pure Data pricing →

SynthMaster 3

  • SynthMaster 3$99, paid once
  • SynthMaster 3 Free BetaFree
  • SynthMaster 3 upgrade from SynthMaster 2$29, paid once
  • Upgrade from SynthMaster 2$29, paid once
  • SynthMaster 3 upgrade from SynthMaster 3 Player$49, paid once
  • SynthMaster 3 upgrade from SynthMaster One$49, paid once
  • Upgrade from SynthMaster 3 Player$49, paid once
  • Upgrade from SynthMaster One$49, paid once
  • Everything Bundle$249, paid once

SynthMaster 3 pricing →

In their own words

Pure Data

Pure Data (Pd) is a free graphical programming environment for combining media processing in real time. Its patch-based workflow supports audio and graphical processing, and it runs on Windows, macOS, and Linux. Artists use Pd for visual arts, theatre, dance, audio, installations, performance, and media art. It can also control hardware and electronics or develop interfaces for other programs. Pd's built-in Deken package manager installs external libraries that extend its functionality. Deken is mainly intended for Pd vanilla, though some other Pd flavors, including Plug Data, can use it. Package listings specify availability for macOS, Linux, Windows, or source compilation, and some packages are limited to particular architectures. Users can find a library or object and install a downloaded DEK package through Pd's Find externals tool. The listed plan is free; no paid plans or usage limits are stated.

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SynthMaster 3

SynthMaster 3 is a modular software synthesizer available as a standalone app and plug-in for macOS and Windows. It offers VAnalog, additive, vector, wavetable, granular, phase modulation, phase distortion, frequency modulation, pulse width modulation, ring modulation, physical modeling, and SFZ sample playback. Each instance can contain up to 16 layers, with each layer holding up to 16 modules and 32 modulation sources. The software includes waveform, wavetable, and multi-sample editors; multi-samples can be imported from WAV or AIFF files and exported in SFZ format. Each layer has a MIDI output channel for routing arpeggiator or sequencer output to different DAW tracks. Plug-in formats are VST2, VST3, AudioUnits, and AAX. The product includes 3150 factory presets. SynthMaster 3 costs $99, paid once and includes 6 free expansions. A free player and demo are also available. The demo stops after 30 minutes, adds noise every minute, and disables WAV wavetable and SFZ multi-sample export.

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