VOSC Visual Particle Synth vs Asteri
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Visual particle synthesis
- Manipulate oscillator size, shape, frequency
- Create moving patterns and textures
- Explore visual harmony
- Differential motion principles
- Harmonic resonances
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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.
Asteri
Explore dynamic visual art created by millions of moving particles. Simply choose a preset thumbnail, and watch the generative art come to life automatically. It's a unique way to experience digital art.
- Generative art creation
- Dynamic particle animations
- Interactive visualizer
- Multiple thumbnail presets
- Automatic animation playback
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Asteri is a generative art app that moves in mysterious ways. About 4 million particles move freely as if they had a will. How to use the app. Just select a thumbnail you're interested in and the particles will start moving automatically.
Screenshots
Verdict
The clearest difference is price: Asteri at Free against VOSC Visual Particle Synth's $4.99. Asteri also leads on review sentiment (100% vs 62%) and update cadence (every 9 months vs every 38 months). VOSC Visual Particle Synth's advantage is ads (none vs shown) and rating (4.5 vs 4.3). On ratings volume, in-app purchases, device support and iOS requirement 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
Asteri is free to download; VOSC Visual Particle Synth costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
VOSC Visual Particle Synth holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 27 and 18 respectively. Written reviews complicate that: 62% of VOSC Visual Particle Synth's written reviews are positive against 100% of Asteri's, so the app with the better star average is not the one people write more warmly about.
VOSC Visual Particle Synth ships an update every 38 months, Asteri every 9 months. The most recent releases landed on October 16, 2026 and October 1, 2026 respectively.
| Parameter | VOSC Visual Particle Synth | Asteri |
|---|---|---|
| Price | $4.99 | Free — better |
| Rating | 4.5 (27 ratings) — better | 4.3 (18 ratings) |
| Positive reviews | 62.2% of reviews | 100.0% of reviews — better |
| Number of ratings | 27 — better | 18 |
| Update frequency | Every 38 months | Every 9 months — better |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Best chart rank | #100 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 123 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Duncan Holby | Kaoru Matarai |
Customer experience
VOSC Visual Particle Synth
Asteri
In-app purchases
VOSC Visual Particle Synth
No in-app purchases
Asteri
No in-app purchases
