# DubFilter vs VAPoly

The clearest difference is price: DubFilter at Free against VAPoly's $14.99. DubFilter also leads on ratings volume (71 vs 16). VAPoly's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.7). On review sentiment and ads there is nothing between them.

DubFilter is free to download; VAPoly costs $14.99 up front. DubFilter sells 1 one-off in-app purchase. VAPoly asks for nothing beyond the download.

VAPoly holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 71 and 16 respectively. Written reviews point the same way: 73% of DubFilter's written reviews are positive against 80% of VAPoly's.

DubFilter ships an update every 6 months, VAPoly every 3 months. The most recent releases landed on September 22, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | DubFilter | VAPoly |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | [4.7 (71 ratings)](https://appshunter.io/ios/app/dubfilter/id979648058/reviews) | **[5.0 (16 ratings)](https://appshunter.io/ios/app/vapoly/id1630490210/reviews)** |
| Number of ratings | **71** | 16 |
| Positive reviews | 73.3% of reviews | **80.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 3 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 12 MB | 19 MB |
| Requires iOS | 17.0 | **15.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Amazing Noises](https://appshunter.io/developer/903336421) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### DubFilter

[App page](https://appshunter.io/ios/app/dubfilter/id979648058)

This app provides a powerful dual filter with resonance and an exclusive overlap parameter. It also features a redesigned stereo sample player with LFO and scrubbing, along with extensive MIDI and file management capabilities.

**Highlights:** Dual low-pass/high-pass filter, Resonance and Overlap parameter, Stereo sample player with LFO, Scrubbing capabilities, Audiobus and Inter-App Audio support, MIDI control and file management, Preset morphing pad

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audio Unit Plugin Support | $1.99 | one-time |


### VAPoly

[App page](https://appshunter.io/ios/app/vapoly/id1630490210)

This virtual analog synthesizer offers 8-voice polyphony with built-in effects, a sequencer, and parameter automation. It functions as a standalone app or an Audio Unit Extension, supporting iCloud Drive and various MIDI and audio export options.

**Highlights:** Virtual analog 8-voice polyphony, Built-in effects (delay, chorus, reverb, etc.), 16-bar sequencer with parameter automation, Oscillators with modulation capabilities, Standalone app and AUv3 extension, iCloud Drive support for cross-device projects

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DubFilter free?

DubFilter is free to download, with in-app purchases available.

### Is VAPoly free?

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

### Which has better reviews, DubFilter or VAPoly?

VAPoly is rated higher. DubFilter averages 4.7 out of 5 from 71 ratings, while VAPoly averages 5.0 from 16 ratings.

### Do DubFilter or VAPoly have ads?

Neither DubFilter nor VAPoly shows ads.

### Which is updated more often, DubFilter or VAPoly?

DubFilter ships an update every 6 months, and VAPoly every 3 months. Most recently, DubFilter was updated on September 22, 2026 and VAPoly on September 20, 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.*