VOSIS vs Deetone
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
VOSIS
This app transforms image data into sound, allowing for unique musical compositions and experimental sound design. It offers control over pitch, timbre, and envelopes to create shape-timbre relationships from visual input.
- Image sonification
- Visual music composition
- Experimental sound design
- Pixel luminance audification
- Shape-timbre relationships
- Adjustable pitch and timbre
- ADSR envelope control
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VOSIS is a synthesizer combining audification of greyscale pixel data with several image filters. It is a tool for image sonification, visual music composition, and experimental sound design. The audification of pixel luminance values creates shape-timbre relationships. Pixel scan rate is controlled in terms of note interval, octave, and scale to give varying pitch between image regions. The ADSR envelope allows one to play images as a non-linear sequence of pitches with varying wavetable/timbre. For more features including presets and unlimited recording see VOSIS Pro. Visit vosis.app for sound example, demo videos, and user guide!
Deetone
Create unique sounds with a monophonic synthesizer featuring four waveform types. Explore two distinct playing modes for studio work or live performance, enhanced by a rich delay effect.
- Monophonic synthesizer
- Four waveform types (saw, square, triangle, sine)
- Chromatic keyboard mode
- Creative ribbon mode for pitch and filter modulation
- LFO modulation for filter cutoff
- Delay FX
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Deetone - is the monophonic space synthesizer. It uses single oscillator with 4 types of waveforms: saw, square, triangle and sine. You can play in two modes: chromatic keyboard and more creative "ribbon" mode. In the "ribbon" mode you can smoothly change pitch of the oscillator and resonances level of the low-pass filter. The filter’s cutoff can be modulated by LFO with wide frequency range. All of that is painting by awesome delay FX. This is a great solution for creative work in a studio and during live performances. Play on the Deetone by moving fingers across the "ribbon" for discovering a richness of possibilities for creativity and entertainment.
Screenshots
Verdict
The clearest difference is review sentiment: VOSIS at 86% against Deetone's 50%. VOSIS also leads on rating (4.2 vs 3.8). Deetone's advantage is update cadence (monthly vs every 8 months) and iOS requirement (11.0 vs 13.0). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
VOSIS holds the better App Store score, 4.2 against 3.8. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews point the same way: 86% of VOSIS's written reviews are positive against 50% of Deetone's.
VOSIS ships an update every 8 months, Deetone monthly. The most recent releases landed on September 4, 2026 and August 16, 2026 respectively.
| Parameter | VOSIS | Deetone |
|---|---|---|
| Price | Free | Free |
| Rating | 4.2 (5 ratings) — better | 3.8 (4 ratings) |
| Positive reviews | 85.7% of reviews — better | 50.0% of reviews |
| Number of ratings | 5 — better | 4 |
| Update frequency | Every 8 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 13.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 11 MB | 20 MB |
| Age rating | 4+ | 4+ |
| Developer | Life Orange LLC | Kyrylo Kovalin |
Customer experience
VOSIS
Deetone
In-app purchases
VOSIS
No in-app purchases
Deetone
No in-app purchases
