Comparison

VOSC Visual Particle Synth vs Sketch Clean

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

VOSC Visual Particle Synth

Create dynamic visual art by manipulating on-screen particles. Explore harmonic resonances and generate endless moving patterns and textures through oscillator control. Inspired by the principles of visual harmony and differential motion.

Highlights
  • Visual particle synthesis
  • Manipulate oscillator size, shape, frequency
  • Create moving patterns and textures
  • Explore visual harmony
  • Differential motion principles
  • Harmonic resonances
Features
Read full description

VOSC is best understood as a visual analogue of a traditional sound synthesizer. The medium of synthesis, rather than sound waves, is a vast quantity of on screen particles. By manipulating the size, shape, and frequency of the oscillators, an endless variety of moving patterns and textures can be created. A primary mechanism at work in VOSC is the phenomenon of visual harmony as explored by the computer graphics pioneer and visual artist John Whitney in the mid 20th century. The oscillators of VOSC operate in accordance with Whitney's principle of differential motion, giving rise to harmonic resonances as their frequencies move across whole ratios.

About

Sketch Clean

Transform your paper sketches into clean, transparent line art for digital use. This app automatically detects pages, corrects perspective, and removes paper tint and shadows, making your drawings ready for coloring or lettering in other art applications.

Highlights
  • Transparent PNG export
  • Automatic page detection
  • Perspective correction
  • Shadow and tint removal
  • Sensitivity adjustment
  • Offline processing
Features
Read full description

Turn notebook sketches into crisp line art on a transparent background — ready for colour, lettering, or finishing in your favourite art app. No more grey paper texture or smudged pencil fill: Sketch Clean isolates your lines so you can work digitally without redrawing from scratch. Private by design: processing stays on your device — no upload, no account, no analytics. HOW IT WORKS - Photograph your sketch or pick one from your photo library - Sketch Clean detects the page, corrects perspective, and removes paper tint and shadows - Your clean line art is ready on a transparent background in seconds FEATURES - Transparent PNG export — lines on alpha, ready to layer in Procreate, Clip Studio, Photoshop, or any digital art tool - "On White" export — share a white-background version that looks great anywhere - Automatic page detection and perspective correction — no manual cropping needed - Shadow and tint removal — handles yellowed paper, uneven lighting, and pencil smudge - Sensitivity slider — keep faint construction lines or capture only bold strokes - Preserve tones toggle — retain subtle pencil graduation or output pure black lines - Before/after comparison slider — drag to see the difference - Share directly to other apps via the iOS share sheet COMPLETELY OFFLINE Every step of processing happens on your iPhone or iPad. Your sketches are never uploaded anywhere. No internet connection required. ONE PRICE, NO SURPRISES Sketch Clean is a one-time purchase. No subscriptions, no in-app purchases, no ads. Pay once, use forever. PERFECT FOR - Traditional artists digitising pencil or ink drawings - Illustrators preparing line art for digital colouring - Comic and manga hobbyists cleaning up hand-drawn panels - Letterers extracting hand-drawn type - Anyone who sketches on paper and finishes digitally PRIVACY Sketch Clean collects no data. No analytics, no tracking, no accounts. Your artwork stays on your device.

Screenshots

VOSC Visual Particle Synth4 screens
Sketch Clean4 screens

Verdict

The call

The clearest difference is price: Sketch Clean at $0.99 against VOSC Visual Particle Synth's $4.99. VOSC Visual Particle Synth's advantage is review sentiment (62% vs 50%) and iOS requirement (12.0 vs 15.1). On ads, in-app purchases, chart position and device support 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

CostPrice · In-app purchases · Ads · Monetization

VOSC Visual Particle Synth costs $4.99 and Sketch Clean $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard4 real differences · 7 level
VOSC Visual Particle Synth versus Sketch Clean: the parameters behind the verdict, then further details
ParameterVOSC Visual Particle SynthSketch Clean
Price$4.99$0.99 — better
Rating4.5 (26 ratings) — better—
Positive reviews62.2% of reviews — better50.0% of reviews
Number of ratings26 — better—
Update frequencyEvery 38 months—
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
Best chart rank#102 — better#135
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 — better15.1
Further details — not scored
Size123 MB26 MB
Age rating4+4+
DeveloperDuncan HolbyRobert Katona

Customer experience

VOSC Visual Particle Synth

All ratings27 ratings
Positive88.9%
Neutral7.4%
Negative3.7%
Written reviews37 reviews
Positive62.2%
Neutral16.2%
Negative21.6%

Sketch Clean

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

VOSC Visual Particle Synth

No in-app purchases

None

Sketch Clean

No in-app purchases

Questions

Is VOSC Visual Particle Synth free?
VOSC Visual Particle Synth costs $4.99, with no in-app purchases.
Is Sketch Clean free?
Sketch Clean costs $0.99, with no in-app purchases.
Do VOSC Visual Particle Synth or Sketch Clean have ads?
Neither VOSC Visual Particle Synth nor Sketch Clean shows ads.
Which is more popular, VOSC Visual Particle Synth or Sketch Clean?
VOSC Visual Particle Synth currently peaks at #102 in the App Store charts, and Sketch Clean at #135. Chart position reflects recent download velocity rather than total install base.

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