# VOSIS vs TriplexClassic

The clearest difference is rating: TriplexClassic at 5.0 against VOSIS's 4.2. TriplexClassic also leads on update cadence (every 5 days vs every 8 months) and review sentiment (100% vs 86%). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

TriplexClassic holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 5 and 15 respectively. Written reviews point the same way: 86% of VOSIS's written reviews are positive against 100% of TriplexClassic's.

VOSIS ships an update every 8 months, TriplexClassic every 5 days. The most recent releases landed on September 4, 2026 and August 19, 2026 respectively.

## The numbers

| Metric | VOSIS | TriplexClassic |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/vosis/id783342051/reviews) | **[5.0 (15 ratings)](https://appshunter.io/ios/app/triplexclassic/id6444733628/reviews)** |
| Number of ratings | 5 | **15** |
| Positive reviews | 85.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 days** |
| Monetization | Free | Free |
| Size | 11 MB | 2 MB |
| Requires iOS | **13.0** | 14 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Life Orange LLC](https://appshunter.io/developer/783342054) | [Christopher Herb](https://appshunter.io/developer/1656508786) |

## What reviewers say

### VOSIS

[App page](https://appshunter.io/ios/app/vosis/id783342051)

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.

**Highlights:** Image sonification, Visual music composition, Experimental sound design, Pixel luminance audification, Shape-timbre relationships, Adjustable pitch and timbre, ADSR envelope control

**In-app purchases:** none


### TriplexClassic

[App page](https://appshunter.io/ios/app/triplexclassic/id6444733628)

This application offers a classic FM synthesizer experience with a modern interface. It allows for a wide range of sounds, from clean to distorted, with six specialized macro controls for easy sound shaping. An LFO and drive control further enhance its sound design capabilities.

**Highlights:** 3 operator FM synth engine, Up to 8 voices, 6 specialized macro controls, LFO with shape control, Drive control, Modern, accessible interface

**In-app purchases:** none


## Frequently asked questions

### Is VOSIS free?

VOSIS is free to download, with no in-app purchases.

### Is TriplexClassic free?

TriplexClassic is free to download, with no in-app purchases.

### Which has better reviews, VOSIS or TriplexClassic?

TriplexClassic is rated higher. VOSIS averages 4.2 out of 5 from 5 ratings, while TriplexClassic averages 5.0 from 15 ratings.

### Do VOSIS or TriplexClassic have ads?

Neither VOSIS nor TriplexClassic shows ads.

### Which is updated more often, VOSIS or TriplexClassic?

VOSIS ships an update every 8 months, and TriplexClassic every 5 days. Most recently, VOSIS was updated on September 4, 2026 and TriplexClassic on August 19, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*