junoNATIVE vs Retromulator

junoNATIVE puts a warm, expressive polyphonic synthesizer in your hands — no hardware required. Designed from the ground up for iOS, junoNATIVE faithfully recreates the soul of classic analog synthesis with a real-time audio engine built on AVAudioEngine. Shape rich, evolving sounds using authentic DCO waveforms, resonant filters, multi-stage envelopes, and a lush built-in chorus — all controlled through a beautifully crafted skeuomorphic interface that feels like touching real hardware. SOUND ENGINE • 6-voice polyphony with per-voice oscillators, filters, and envelopes • DCO with saw, square, and sub-oscillator waveforms plus PWM modulation • Resonant low-pass VCF with cutoff, resonance, envelope mod, LFO mod, and key follow • High-pass filter for thinning out low end • ADSR envelope with snappy response for both filter and amplitude • Syncable LFO with rate control for vibrato, filter sweeps, and modulation • Three-mode chorus: Chorus I, Chorus II, and I+II combined for rich stereo width • Delay and reverb effects with adjustable mix, time, and feedback • Portamento for smooth pitch glides between notes ANALOG CHARACTER Dial in the imperfections that make analog synths feel alive: • DCO Beating — subtle detuning between voices • Filter Drift — slow random cutoff movement • Envelope Click — percussive transient at note onset • Cable Length, Temperature, and Age controls for vintage warmth ARPEGGIATOR • Up, Down, Up/Down, and Random patterns • Adjustable tempo from slow ambient pulses to rapid sequences • Hold mode to sustain arpeggios hands-free • Chord mode for instant polyphonic voicings PRESET LIBRARY Browse a curated collection of patches organized by category — pads, basses, leads, keys, FX, and more. Includes presets inspired by legendary electronic music productions. Tap to load and start playing instantly. INTERFACE • Skeuomorphic design with realistic 3D knobs, illuminated LED buttons, and wood-grain panels • Real-time oscilloscope waveform visualizer • Scrollable, zoomable piano keyboard with velocity-sensitive touch • Floating parameter overlay shows values as you tweak • Haptic feedback on every interaction • Optimized for iPhone Built with SwiftUI and AVAudioEngine. No sample libraries. No MIDI required. Just pure synthesis.

Retromulator is a multi-core retro hardware emulation app and AUv3 plug-in that brings legendary synthesizer, sampler, and keyboard cores back to life through authentic low-level emulation. Each core runs its actual firmware, physical model, or sample data — delivering the unmistakable character of the hardware that defined electronic music from the early 80s through the 2000s. Version 1.6 adds the 88emu core, covering the Roland SC-88, SC-88VL, SC-88Pro, SC-8850 and SC-55mkII GS sound modules with their own Standard MIDI File player. — EMULATED CORES — VIRTUAL ANALOG SYNTHS Motorola DSP 56300 recreation (requires M1 iPad or iPhone 15 Pro or newer): • Access Virus A, B and C • Access Virus TI / TI2 / Snow • Clavia Nord Lead 2X • Waldorf microQ • Waldorf Microwave XT FM SYNTHESIS • Yamaha DX7 — original chip set emulation, based on VDX7 by Charles Chiaccona • Yamaha OPL3 — Nuked OPL3 cycle-accurate FM by Nuke.YKT GM / GS SOUND MODULES • 88emu — Roland SC-88, SC-88VL, SC-88Pro, SC-8850 and SC-55mkII boards, emulation by Giulio Zausa, with GS variation, map and rhythm handling, program and drum kit names read straight from the board ROM, 16-part multitimbral operation, and a Standard MIDI File player with offline rendering to WAV or AAC. CHIPTUNE • Commodore 64 SID 6581/8580 — based on reSID. 3-voice polyphony, 8580 chip model with high-quality RESAMPLE, GoatTracker .sng / .ins bank loading (GTS3/4/5, GTI3/4/5) and .sid file import (PSID/RSID), full macro playback engine (wavetable, pulsetable, filtertable, speedtable) and live MIDI control of cutoff (CC 74), resonance (CC 71), pulse width (CC 75), vibrato (CC 1) and pitch bend. • Ayumi (AY-3-8910 / YM2149) — the PSG behind the ZX Spectrum, Amstrad CPC, Atari ST and MSX. Ayumi emulation by Peter Sovietov with the Ym2149Synth voice engine, 3-voice polyphony, switchable AY / YM engine, .ay patch loading, Factory and User banks, and 11 live CC controls. ELECTRIC PIANO AND SAMPLER • Wurlitzer 200A — OpenWurli physical modelling by hal0zer0 (Rust ported to C++ by discoDSP) • Akai S1000 — SFZero sample engine by Steve Folta, with Bliss Sampler support and resampling engine by discoDSP (SF2 / SFZ / ZBP / ZBB) — KEY FEATURES — • Native AUv3 plug-in for AUM, Cubasis, GarageBand, Logic Pro and more • Standalone app for iPhone and iPad • Full MIDI control: CC, mod wheel, expression, pitch bend • 8-point sinc interpolation for sample playback • Auto-slice drum mapping and global retuning via MIDI • ROM firmware loading from original hardware • Background audio, iCloud and Files app integration • Optimised interpreter compatible with the iOS App Store sandbox