# JAX SR vs VAPolyWest

The clearest difference is price: JAX SR at $6.99 against VAPolyWest's $14.99. JAX SR also leads on update cadence (every 4 weeks vs every 10 months) and iOS requirement (14.0 vs 16.6). VAPolyWest's advantage is ratings volume (5 vs 1). On rating, ads, in-app purchases and monetization model there is nothing between them.

JAX SR costs $6.99 and VAPolyWest $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for JAX SR against 5.0 for VAPolyWest. That said, the two scores are not equally well evidenced: VAPolyWest has 5 ratings behind it against 1, so its average is the more settled of the two.

JAX SR ships an update every 4 weeks, VAPolyWest every 10 months. The most recent releases landed on October 19, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | JAX SR | VAPolyWest |
| --- | --- | --- |
| Price | **$6.99** | $14.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/jax-sr-phaser/id1636821536/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/vapolywest/id6587550154/reviews) |
| Number of ratings | 1 | **5** |
| Positive reviews | — | 75.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 weeks** | Every 10 months |
| Monetization | Paid | Paid |
| Size | 21 MB | 15 MB |
| Requires iOS | **14.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Jens Guell](https://appshunter.io/developer/1195004865) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### JAX SR

[App page](https://appshunter.io/ios/app/jax-sr-phaser/id1636821536)

This audio effect app allows selective frequency range processing for modulation effects. It offers a classic phaser with MIDI control and dynamic mix adjustment, preventing negative side effects from full-range processing. It requires a host application to function.

**Highlights:** Selective frequency range processing, Classic phaser modulation, Optional MIDI control, Dynamic mix adjustment, Universal app for Apple devices

**Features:** macOS Compatibility

**In-app purchases:** none


### VAPolyWest

[App page](https://appshunter.io/ios/app/vapolywest/id6587550154)

This app is a polyphonic synthesizer inspired by 1960s California west coast synthesis. It features wave folding, lowpass gates, and step sequencers for generative music creation. It functions as a standalone app or an AudioUnit Extension across iPhone, iPad, and Mac.

**Highlights:** Virtual analog west coast style polyphonic synthesizer, Wave folder and lowpass gate, Step sequencer and envelope generators, Up to 8 voice polyphony, Audio Unit Extension (AUv3) support, MIDI 2.0 support, Audio export options

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is JAX SR free?

JAX SR costs $6.99, with no in-app purchases.

### Is VAPolyWest free?

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

### Which has better reviews, JAX SR or VAPolyWest?

JAX SR and VAPolyWest are both rated 5.0 out of 5 on the App Store, from 1 and 5 ratings respectively.

### Do JAX SR or VAPolyWest have ads?

Neither JAX SR nor VAPolyWest shows ads.

### Which is updated more often, JAX SR or VAPolyWest?

JAX SR ships an update every 4 weeks, and VAPolyWest every 10 months. Most recently, JAX SR was updated on October 19, 2026 and VAPolyWest on October 24, 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.*