TraceSonic
Pixels driven additive synth
$7.99
TraceSonic turns pictures into sound. Paint directly on a spectral canvas and hear each mark become part of a playable additive instrument: horizontal position is time, height is pitch, and brightness controls the level of each partial.
Start with an empty canvas and draw with solid, soft, textured, tapered, or harmonic brushes. Fill the canvas with generated patterns, or import an image and turn its brightness into sound. Pitch snapping keeps freehand marks on your selected scale.
Shape your sound with:
• 128 additive oscillators spanning four octaves
• Seven classic waveforms and 12 built-in wavetables
• Forward, reverse, and ping-pong scanning
• Adjustable pass length and tempo-synchronized loops in compatible Audio Unit hosts
• MIDI note input for retuning the complete canvas
• More than 60 factory patches, including tones, sequences, gestures, textures, drones, and sound effects
• User patches that save the canvas and its synthesis settings
• Solid, harmonic, soft, textured, and tapered brush families
• Undo, redo, erasing, pitch snapping, and scale selection
Use TraceSonic as a standalone instrument on iPhone, iPad, and Mac, or load its AUv3 instrument in a compatible host.
Ratings & Reviews
### Updates / fixes
- fixed MIDI input limit for messages (this could lead to crash after some while)
- fixed a startup crash when connecting to new/updated audio output
- added 16 bands split for MIDI Out channels
- popovers scroll to near last selected item when opened
### Added
- Separate `TraceSonic MIDI` processor unit:
- audio skipped when used as MIDI processor
- Base note hold is automatically turned On, so the playhead/canvas plays with host transport (would require MIDI In otherwise) - also after patches are loaded, and MIDI Legato and Merge is enabled
- MIDI In channel mask added to MIDI settings
- symmetric brushes
- keyboard shortcuts: Cmd+Z, Cmd+Shift+Z for undo/redo history
- 'Composition study': a coherent set of techno inspired sequencing and simple instruments patches and patterns
which use MIDI enabled 8 bands canvas as 'sequencer', each instrument sits on separate MIDI channel
- new whole canvas operations:
Fade - reduces strong pixels more than quiet detail
Amplify - lifts quiet detail without clipping peaks
- region got also Amplify
The developer, r6 appz, 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Martin Cvengros
- Size
- 6.9 MB
- Category
- Music
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Martin Cvengroš

