# isfizz vs VAPolyMkII

The clearest difference is price: isfizz at $2.99 against VAPolyMkII's $14.99. isfizz also leads on review sentiment (100% vs 67%) and rating (4.7 vs 4.5). VAPolyMkII's advantage is update cadence (weekly vs fortnightly). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

isfizz costs $2.99 and VAPolyMkII $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

isfizz holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 14 and 11 respectively. Written reviews point the same way: 100% of isfizz's written reviews are positive against 67% of VAPolyMkII's.

isfizz ships an update fortnightly, VAPolyMkII weekly. The most recent releases landed on October 9, 2026 and October 19, 2026 respectively.

## The numbers

| Metric | isfizz | VAPolyMkII |
| --- | --- | --- |
| Price | **$2.99** | $14.99 |
| Rating | **[4.7 (14 ratings)](https://appshunter.io/ios/app/isfizz/id6470708963/reviews)** | [4.5 (11 ratings)](https://appshunter.io/ios/app/vapolymkii/id6476809566/reviews) |
| Number of ratings | **14** | 11 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Weekly** |
| Monetization | Paid | Paid |
| Size | 6 MB | 16 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Ryouta Kira](https://appshunter.io/developer/862984358) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### isfizz

[App page](https://appshunter.io/ios/app/isfizz/id6470708963)

This app plays SFZ files, an open format for sampled sound instruments. It supports various audio file formats, MIDI, and Scala tuning files. It also functions as an Audio Unit Extension (AUv3) for use with other music apps.

**Highlights:** SFZ file playback, Audio Unit Extension (AUv3) support, Edit SFZ strings, Load SFZ files in place, Scala tuning file support, MIDI support

**Features:** Vision Pro support

**In-app purchases:** none


### VAPolyMkII

[App page](https://appshunter.io/ios/app/vapolymkii/id6476809566)

This virtual analog synthesizer offers a 16-voice bitimbral polyphonic sound engine with two distinct filter models and extensive modulation options. It includes a built-in sequencer, various effects, and supports AudioUnit Extension for integration with DAWs. Projects can be synced across iPhone, iPad, and Mac via iCloud.

**Highlights:** 16-voice bitimbral polyphonic synthesizer, Two analog-modeled filter types, Extensive modulation capabilities, Built-in piano roll sequencer, Multiple audio effects, AudioUnit Extension (AUv3) support, iCloud Drive project syncing

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is isfizz free?

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

### Is VAPolyMkII free?

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

### Which has better reviews, isfizz or VAPolyMkII?

isfizz is rated higher. isfizz averages 4.7 out of 5 from 14 ratings, while VAPolyMkII averages 4.5 from 11 ratings.

### Do isfizz or VAPolyMkII have ads?

Neither isfizz nor VAPolyMkII shows ads.

### Which is updated more often, isfizz or VAPolyMkII?

isfizz ships an update fortnightly, and VAPolyMkII weekly. Most recently, isfizz was updated on October 9, 2026 and VAPolyMkII on October 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.*