ARPJAM Studio

Generative synth & AUv3 FX

$7.99

No sequencing, no playing — a generative arpeggio instrument that never stops. AUv3, MIDI keyboard, looper. The Mac version is now included — one purchase, every device. No sequence. No play button needed. An instrument that keeps going without you programming anything. Two generative engines invent phrases endlessly inside the scale and chord you choose. What you shape is not a song — it is a way of sounding. Move a control and the sound changes shape without ever stopping. Density, contour, filter, tape movement. It is built so that nothing you touch can break it. And you can play it. On the key pad or from a MIDI keyboard, right on top of the stream it is generating. What you play can be captured into the looper. ■ Generate • Two independent arpeggio engines (waveform, filter, envelope, effects) • Eight arpeggio types, chord progressions, ten time signatures • Drum machine and bass • Six LFOs, XY pad, performance FX ■ Play • On-screen key pad — always in scale • MIDI keyboard input (damper pedal, pitch bend, standard control changes) • One-bar looper that records how hard you played ■ Sound • Piano — three velocity layers, stereo, damper release • Waveforms (sine / triangle / saw / square) plus an acid filter • Delay, reverb, Glitch, Granular, overdrive • DRIFT / FLUTTER — tape movement on the synth voices and the live input alike • Concert pitch A=415–444 Hz ■ Connect • AUv3 plug-in — as an instrument and as an effect • Ableton Link, MIDI Clock, MIDI out • External audio input (line / microphone) • WAV recording and export One-time purchase. No subscription.

  • 5.0
    out of 5
    2 Ratings

ARPJAM Studio now runs on the Mac (universal purchase — if you own it on iPad/iPhone, the Mac version is included). ■ Mac - Standalone app - AUv3 plug-in (instrument and effect) in Logic Pro, Ableton Live, GarageBand and more - Ableton Link ■ New sounds - New "EP" waveform — a synthesized electric piano voice - New oscillator "Character" — PURE (the exact waveform, as before) or ANALOG (analog-synth imperfection: imperfect shapes, slow pitch drift, random start phase, gentle saturation) - Envelope and filter settings are now remembered separately for three groups — the four synth shapes, PIANO, and EP — so switching waveform recalls that group's own settings ■ New - TIE switch — consecutive slots tie into one legato line (non-consecutive notes play as before) - MIDI out on a virtual port ("ARPJAM Studio OUT") — sequence your other instruments from ARPJAM, even in DAWs that cannot read plug-in MIDI output such as Ableton Live (ARP A=ch1 / ARP B=ch2 / DRUMS=ch10) - New Target setting in the plug-in — choose whether the host's MIDI plays ARP A or ARP B - Vel Sens in MIDI INPUT — boosts incoming velocity so a light touch can match the sequencer's level - Vel Sens in the Oscillator section — sets how hard the sequencer strikes (hand playing is unaffected) ■ Improved and fixed - Big reduction of audible zipper/click noise while adjusting parameters during playback (raising DRIVE from zero, send levels, STEREO WIDTH, switching reverb types) - Sliders are easier to grab (edge drags, coexistence with vertical scrolling) - iPhone layout fully reworked - Overview screen refined (uniform card heights; taller content scrolls inside its card) - Fixed horizontal swipes failing right after a vertical scroll - Fresh installs and newly inserted plug-ins now boot with the current factory preset - Fixed the plug-in importer sometimes rejecting valid .arpjam files - Fixed the export name dialog escaping small plug-in windows

The developer, Takashi Tsunoda, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Takashi Tsunoda
    Size
    • 84.7 MB
    Category
    • Music
    Compatibility
    Requires iOS 15.0 or later.
    • iPhone
      Requires iOS 15.0 or later.
    • iPad
      Requires iPadOS 15.0 or later.
    • iPod touch
      Requires iOS 15.0 or later.
    • Mac
      Requires macOS 12.0 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    • English
    Age Rating
    4+
    Copyright
    • © 2026 twelvetone