# Kompresor vs VAPolyFM

The clearest difference is price: VAPolyFM at $14.99 against Kompresor's $24.99. Kompresor's advantage is rating (5.0 vs 4.5) and update cadence (every 8 months vs every 17 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Kompresor costs $24.99 and VAPolyFM $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Kompresor holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 3 and 6 respectively.

Kompresor ships an update every 8 months, VAPolyFM every 17 months. The most recent releases landed on September 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Kompresor | VAPolyFM |
| --- | --- | --- |
| Price | $24.99 | **$14.99** |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/kompresor/id1572077067/reviews)** | [4.5 (6 ratings)](https://appshunter.io/ios/app/vapolyfm/id6737108540/reviews) |
| Number of ratings | 3 | **6** |
| Positive reviews | — | 16.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 4 MB | 17 MB |
| Requires iOS | **15.8** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Shattered Glass Audio](https://appshunter.io/developer/1565520347) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### Kompresor

[App page](https://appshunter.io/ios/app/kompresor/id1572077067)

This audio tool offers versatile compression with multiple algorithms and processing modes for various signals, from mix bus to mastering. It provides fine-tuning options like DELTA monitoring and external sidechaining for precise audio manipulation.

**Highlights:** Multiple compression algorithms, Five processing modes (stereo, mid, side, left, right), External sidechain input, DELTA monitoring, Fast attack time (0.01ms), Peak and RMS detectors, AUv3 plugin compatibility

**In-app purchases:** none


### VAPolyFM

[App page](https://appshunter.io/ios/app/vapolyfm/id6737108540)

Create music with a versatile hybrid synthesizer offering both FM and virtual analog subtractive synthesis. Explore a wide range of effects, a built-in sequencer, and extensive MIDI support. Save and share projects seamlessly across iPhone, iPad, and Mac.

**Highlights:** FM synthesizer with 6 operators, Virtual analog subtractive synthesizer, Built-in effects (delay, chorus, reverb), Sequencer with piano roll editor, AudioUnit Extension (AUv3) support, Ableton Link and MIDI 2.0 support, iCloud Drive project sharing

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Kompresor free?

Kompresor costs $24.99, with no in-app purchases.

### Is VAPolyFM free?

VAPolyFM costs $14.99, with no in-app purchases.

### Which has better reviews, Kompresor or VAPolyFM?

Kompresor is rated higher. Kompresor averages 5.0 out of 5 from 3 ratings, while VAPolyFM averages 4.5 from 6 ratings.

### Do Kompresor or VAPolyFM have ads?

Neither Kompresor nor VAPolyFM shows ads.

### Which is updated more often, Kompresor or VAPolyFM?

Kompresor ships an update every 8 months, and VAPolyFM every 17 months. Most recently, Kompresor was updated on September 16, 2026 and VAPolyFM on September 21, 2026.

---

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