NEWNow on the App Store
SYNTH FOR iPAD
Dark hybrid synthesis, now in your hands.
- 2 in 1
- Standalone + AUv3
- 238
- Factory presets
- +22
- Free expansion
- 139
- Wavetables
- 0
- Data collected
01Engine
A complete instrument,
built around motion.
The whole synth on one iPad screen. Two analog-style oscillators, a Sub/Noise section and the Digital Engine stay in view while you play — no menus between you and the sound.

Oscillators that move.
Sine, Saw, Triangle and Pulse with hard sync, drift, unison, detune, wavefolding and ring modulation.
Sub/Noise adds low-end weight and transient texture, with White, Pink or Blue noise.
- Osc 1 · Osc 2
- Hard sync
- Fold · Ring
- Sub / Noise
02Wavetable · Resonator
139 wavetables.
One physical Resonator.
The Digital Engine switches between Wavetable and Resonator without leaving the main view. Resonator builds tonal bodies, metallic percussion and dark drones — and its cymatic display rings with the sound.


03Filters · Modulation
Eight filters.
Four envelopes. One Matrix.
Drag a source straight onto a control, or route it in the Matrix with precise amounts. Static halos show assignments; live arcs show movement.

- FiltersLP24 · LP12 · BP · HP · Notch · Comb · Analog · ZDF
- EnvelopesAmp · Filter · Aux · looping multi-segment ENV
- SourcesFour LFOs · Macros · Motion Envelope · Chaos · velocity
04Motion Filter · FX
Twelve effects.
One Motion Filter.
Multimode filtering with tempo-synced movement, envelope response and a live analyzer, next to a complete built-in chain.

- Drive
- Bitcrusher
- Chorus
- Delay
- Reverb
- Compressor
- Pump
- EQ
- Phaser
- Flanger
- Limiter
- Shifter
05Sequencing
From a held note
to a whole phrase.
An arpeggiator with probability, ratchets and swing, and a 32-step sequencer with Value, Pitch, Octave, Velocity and Gate lanes. Send Notes plays the pattern; switched off, the same steps modulate.
- ArpeggiatorDirection · rate · gate · swing · probability · ratchets · octaves
- 32 stepsEuclidean generation · rotation · per-step control
- ScaleKeeps generated material in key

06Play mode
When the keys
become the point.
Expand the keyboard into the iPad-only Play view, with pitch, mod and octave in reach — then return to the full instrument without leaving the sound.

07Presets
238 presets.
Plus a free expansion.
Sequences, basses, bleeps, acid, percussion, resonant tones, dark atmospheres, impacts and cinematic textures. Factory Expansion 01 adds 22 more from the internal Store at no extra cost.


08Skins
Same instrument.
Four kinds of light.
Scroll to change the studio light. Dark, Steel, Blueprint and Dawn.
09Privacy
Your sound stays
on your iPad.
VOLTRA collects no personal data, audio, MIDI, presets or usage. No ads, no analytics, no tracking — and no account or internet connection for synthesis, modulation or sequencing.
- Data collectedNone
- GenerationCategory-aware preset and sequence generation runs on the iPad
- FilesPreset import and export only through the iPadOS document picker, when you choose
- DetailsPrivacy policy · Support

