TraceSonic vs SL DREAD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TraceSonic
Transform images into unique sounds by drawing on a spectral canvas. This app uses brush strokes and imported images to generate additive synthesis, offering a creative way to craft musical instruments and soundscapes.
- Draw on spectral canvas
- Import images to create sound
- 128 additive oscillators
- Multiple brush types
- Pitch snapping to scales
- MIDI note input
- Save custom patches
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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.
SL DREAD
Transform any audio into unsettling soundscapes with 30 evolving horror scenes. This app processes melodies, vocals, and more to create disturbing atmospheres for music, film, and game sound design. Its unique interface allows for independent control of various sonic layers.
- 30 evolving horror scenes
- Audio-reactive interface
- Independent layer control
- Standalone app and AUv3 effect
- Transport Link for host sync
- User presets
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SL DREAD blends incoming audio with 30 evolving horror scenes. Process melodies, drum loops, vocals, synths and field recordings to build disturbing atmospheres for music, film and game sound design. Fusion makes the atmosphere respond to the source. Shape its character with Age, Decay, Motion, Voice, Event, Space and Mix, and control drone, breath, whisper and metallic layers independently. Transport Link follows playback in a compatible host. The weathered medical-monitor interface includes an audio-reactive CRT display, scene selection, user presets and input/output controls. On iPhone, compact portrait pages separate Controls, Layers and I/O. Use the full interface in landscape or on iPad. Includes a standalone app and an AUv3 audio effect. To process a track from another music app, insert SL DREAD in a compatible AUv3 host. Standalone input monitoring starts muted to avoid speaker feedback; use headphones when enabling microphone monitoring. No account or in-app purchase is required. Audio processing stays on your device.
Screenshots
Verdict
The clearest difference is price: TraceSonic at $7.99 against SL DREAD's $14.99. SL DREAD's advantage is iOS requirement (15.0 vs 17.0). On rating, ratings volume, update cadence and ads there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
TraceSonic costs $7.99 and SL DREAD $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for TraceSonic against 5.0 for SL DREAD. Both are backed by a comparable volume of ratings — 1 and 1 respectively.
Both ship on a similar rhythm, roughly every 9 days. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.
| Parameter | TraceSonic | SL DREAD |
|---|---|---|
| Price | $7.99 — better | $14.99 |
| Rating | 5.0 (1 ratings) | 5.0 (1 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 1 | 1 |
| Update frequency | Every 9 days | Every 9 days |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 91 MB |
| Age rating | 4+ | 12+ |
| Developer | r6 appz | VIACHESLAV ZHILTSOV |
Customer experience
TraceSonic
SL DREAD
In-app purchases
TraceSonic
No in-app purchases
SL DREAD
No in-app purchases









