# VAPolyTZFM vs pOus

The clearest difference is price: pOus at $2.99 against VAPolyTZFM's $14.99. pOus also leads on update cadence (every 4 months vs every 9 months) and iOS requirement (12.0 vs 16.6). VAPolyTZFM's advantage is ratings volume (3 vs 1). On rating, ads, in-app purchases and monetization model there is nothing between them.

VAPolyTZFM costs $14.99 and pOus $2.99 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 VAPolyTZFM against 5.0 for pOus. Both are backed by a comparable volume of ratings — 3 and 1 respectively.

VAPolyTZFM ships an update every 9 months, pOus every 4 months. The most recent releases landed on October 7, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | VAPolyTZFM | pOus |
| --- | --- | --- |
| Price | $14.99 | **$2.99** |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/vapolytzfm/id6747690642/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/pous/id6748279554/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 17 MB | 15 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ryo Togawa](https://appshunter.io/developer/1474193056) | [Satoshi Kajii](https://appshunter.io/developer/1777441634) |

## What reviewers say

### VAPolyTZFM

[App page](https://appshunter.io/ios/app/vapolytzfm/id6747690642)

This app is a polyphonic synthesizer that utilizes Through Zero FM for musical sound generation. It offers a standalone mode with Ableton Link and MIDI support, as well as an AudioUnit Extension for use with other music software. Built-in effects and iCloud Drive integration enhance its creative capabilities.

**Highlights:** Through Zero FM synthesis, AudioUnit Extension (AUv3) support, Ableton Link and MIDI connectivity, Built-in effects suite, iCloud Drive project sharing, Analog style step sequencer, Up to 8 voice polyphony

**Features:** Vision Pro support

**In-app purchases:** none


### pOus

[App page](https://appshunter.io/ios/app/pous/id6748279554)

This app emulates analog drum machine bass drums with adjustable tuning and decay. It offers MIDI OUT functionality for envelope follower data and a scale mode for playing musical scales. Designed for musicians using AUv3 hosts.

**Highlights:** BassDrum emulation, Adjustable tune and decay, MIDI OUT envelope follower, Scale mode for musical notes, AUv3 instrument, MIDI CC routing

**In-app purchases:** none


## Frequently asked questions

### Is VAPolyTZFM free?

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

### Is pOus free?

pOus costs $2.99, with no in-app purchases.

### Which has better reviews, VAPolyTZFM or pOus?

VAPolyTZFM and pOus are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do VAPolyTZFM or pOus have ads?

Neither VAPolyTZFM nor pOus shows ads.

### Which is updated more often, VAPolyTZFM or pOus?

VAPolyTZFM ships an update every 9 months, and pOus every 4 months. Most recently, VAPolyTZFM was updated on October 7, 2026 and pOus on October 8, 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.*