User Guide

On smartphone, the screen is arranged vertically: XY pad at top, controls below.

On PC, the screen uses a 3-column layout: left controls, center XY pad, right controls.

XY Pad — The main performance area. Touch or click and drag to play. X-axis = pitch (left low, right high). Y-axis = assignable parameter.

Controls — FX mode selector, waveform selector, effect sliders, ARP/CHD/SUB/PED toggles, KEY/SCALE/BASE selectors.

Settings (gear icon) — MIDI configuration, data export/import, license activation.

FX Mode — Determines the sound engine: SYNTH, NOISE, S.SAW, or RISER. Each mode has different XY pad behavior.

Tier — Padflux offers three tiers: FREE (core features), Sound pack (all sounds), Pro pack (MIDI + recording). Locked features show a lock icon.

Preset — A saved snapshot of all your settings (FX mode, waveform, effects, ARP, etc.). Load instantly with a single tap.

Open padflux.com/synth in your browser.

Tap "TAP TO START" on the overlay to begin.

iPhone — Safari → Share → "Add to Home Screen". Runs in full-screen with no browser bars.

Android — Chrome → Menu → "Add to Home screen".

PC — Open in Chrome or Edge.

Touch (or click) anywhere on the XY pad to produce sound.

Move horizontally to change pitch. Move vertically to control the Y-axis parameter (default: volume).

Release to stop the sound. The pad responds to continuous movement while held.

Tap the KEY display to open the piano keyboard.

Select a root note (C through B). The pad grid and note labels update immediately.

Tap SCALE to cycle through: Minor, Major, Pentatonic, Chromatic, Dorian, Whole Tone.

The scale determines which notes the X-axis snaps to.

BASE sets the starting octave (1–6).

RANGE controls how many octaves the pad spans. A wider range covers more notes but reduces precision per note.

In SYNTH mode, tap the waveform selector to choose: SIN, TRI, SAW, SQR, ORG, BRS, BEL, WRM.

Each waveform has a distinct character — from smooth sine to bright square to warm pad tones.

Use the sliders to adjust: Decay (note length), Reverb (space), Delay (echo), Filter (brightness), LFO (modulation), Glide (pitch slide).

In SYNTH mode, the Y-axis can be reassigned to any of these effects for real-time control while playing.

Tap the Y-axis label on the XY pad to cycle through available assignments.

Each FX mode has different Y-axis options. S.SAW is fixed to SPREAD, RISER to RISE.

Tap ARP to toggle. When active, holding the pad generates a rhythmic sequence of notes.

Swipe ARP to choose: UP (ascending), DN (descending), RND (random).

Adjust BPM (40–300) to set the arpeggiator speed.

Swing adds a shuffle feel. 50 = straight, higher = more swing.

Step division controls note density (shorter divisions = faster notes).

Octave range sets how many octaves the arpeggio spans.

Tap CHD to toggle chords on/off. Swipe to select voicing: 5th, tri, 7th, 9th.

Chords are built diatonically from the current scale and key — every position on the pad produces a musically correct chord.

Combine with ARP for chord arpeggios.

Tap SUB to add a sub-oscillator one octave below the played note.

DEEP mode adds a second sub-oscillator two octaves below for heavier bass.

FULL — Sustains all notes after release, like a piano sustain pedal.

SPLIT — Sustains only notes played on the left half of the pad. The right half plays normally.

Tap a preset slot in the preset bar to instantly load all saved settings.

Long-press an empty slot (or an existing preset) to save your current settings.

A dialog appears to confirm or edit the preset name.

Settings → Data → Export saves all presets and MIDI assignments as a JSON file.

Import on another device to transfer your sounds.

Open Settings → MIDI. Available MIDI ports are listed automatically.

Select your device to connect. MIDI requires HTTPS or localhost.

Padflux sends Note On/Off, CC messages, all chord notes, and ARP steps to connected MIDI devices.

Use the VOL slider to blend internal sound and MIDI output for layered performances.

Assign any MIDI CC to a Padflux parameter via the Assign panel.

Learn mode: tap Learn, move a knob on your controller, and Padflux auto-maps it. Channel is detected automatically.

When receiving MIDI Clock, the arpeggiator tempo locks to the external source automatically.

Tap REC to enter recording standby.

An optional countdown prepares you before recording begins.

Perform on the XY pad. Tap STOP when finished.

Choose stereo or mono, then save as WAV.

Enable the metronome for a tempo reference click synced to your BPM setting.

The metronome plays through a separate channel and is not included in the recording.