# VOSIS vs Filterjam

The clearest difference is rating: Filterjam at 5.0 against VOSIS's 4.2. Filterjam also leads on ratings volume (34 vs 5). VOSIS's advantage is update cadence (every 8 months vs every 22 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

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

Filterjam holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Filterjam has 34 ratings behind it against 5, so its average is the more settled of the two. Written reviews complicate that: 86% of VOSIS's written reviews are positive against 83% of Filterjam's, so the app with the better star average is not the one people write more warmly about.

VOSIS ships an update every 8 months, Filterjam every 22 months. The most recent releases landed on October 6, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | VOSIS | Filterjam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (5 ratings)](https://appshunter.io/ios/app/vosis/id783342051/reviews) | **[5.0 (34 ratings)](https://appshunter.io/ios/app/filterjam/id1659941144/reviews)** |
| Number of ratings | 5 | **34** |
| Positive reviews | **85.7% of reviews** | 83.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 22 months |
| Monetization | Free | Free |
| Size | 11 MB | 25 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Life Orange LLC](https://appshunter.io/developer/783342054) | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) |

## 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


### Filterjam

[App page](https://appshunter.io/ios/app/filterjam/id1659941144)

This app offers a multiband resonant filter for creating unique audio effects. It divides input signals into four bands, allowing for various sonic manipulations from subtle enhancements to extreme sound mangling.

**Highlights:** Multiband resonant filtering, 4-band signal division, Sum or multiply band modes, Versatile sound shaping, Ringmod-like effects

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is VOSIS free?

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

### Is Filterjam free?

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

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

Filterjam is rated higher. VOSIS averages 4.2 out of 5 from 5 ratings, while Filterjam averages 5.0 from 34 ratings.

### Do VOSIS or Filterjam have ads?

Neither VOSIS nor Filterjam shows ads.

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

VOSIS ships an update every 8 months, and Filterjam every 22 months. Most recently, VOSIS was updated on October 6, 2026 and Filterjam on October 15, 2026.

---

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