Comparison

DubFilter vs VAPoly

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

DubFilter

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
Read full description

The Dub Filter is a dual low-pass/high-pass 24/48 dB filter, with resonance and the exclusive Overlap parameter! It contains a completely redesigned stereo sample player with LFO and scrubbing capabilities. Main Features: - Audiobus and Inter-App Audio support (sender and FX) - State Variable Filter (Low-Pass and High-Pass) with resonance and overlap - Built In Stereo Sampler with varispeed and scrubbing - Control Manager LFO for all the Parameters - Midibus, Virtual Midi and Network: 14 bit NRPN controllers - File Manager, sharing common audio files via iTunes, Dropbox and AudioCopy - Snapshots Presets Morphing Pad - Post Fx Chain: Low-shelf Filter, High-shelf and Compressor

About

VAPoly

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
Read full description

VAPoly is a virtual analog 8 voice polyphonic synthesizer for iPhone, iPad and Mac. VAPoly features built-in effects, built-in sequencer, parameter automation, oscilloscopes and spectrum analyzer. VAPoly works as a stand alone or as an Audio Unit Extension (AUv3). Stand Alone supports Ableton Link, Bluetooth MIDI, MIDI IN/OUT and audio file export. The synth features two oscillators, two ADSR envelopes, a high pass filter, a low pass filter and an amplifier per voice. The oscillators are capable of wide variety of modulation to shape the sound. The low pass filter is modeled on cascaded OTA filter circuit for classic analog sound. The Effects include delay, chorus, flanger, reverb, eq, and compressor. The sequencer offers ability to program 16 bar pattern per clip for total 16 clips and parameter automation. Project files can be saved in iCloud Drive to work on iPhone, iPad and Mac. Main Features Virtual analog 8 voice polyphonic synthesizer Sequencer 16 bar patterns per clip. Total 16 clips. Parameter automation. Audio Export Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support iCloud Drive. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Support Audio Unit Extension (AUv3) Support Universal Purchase. VAPoly works on iPhone, iPad and Mac. System Requirements - For iOS Devices, A10 Fusion or above is recommended. - AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. - AudioUnit Extension (AUv3) is supported by Apple Garage Band on iOS and macOS, and Apple Logic on Mac.  For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension (AUv3).

Screenshots

DubFilter4 screens
VAPoly4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard8 real differences · 2 level
DubFilter versus VAPoly: the parameters behind the verdict, then further details
ParameterDubFilterVAPoly
PriceFree — better$14.99
Rating4.7 (71 ratings)5.0 (16 ratings) — better
Positive reviews73.3% of reviews80.0% of reviews — better
Number of ratings71 — better16
Update frequencyEvery 6 monthsEvery 3 months — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPadiPhone, iPad, iPod, Mac — better
Requires iOS17.015.2 — better
Further details — not scored
Size12 MB19 MB
Age rating4+4+
DeveloperAmazing NoisesRyo Togawa

Customer experience

DubFilter

All ratings71 ratings
Positive91.5%
Neutral2.8%
Negative5.6%
Written reviews30 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

VAPoly

All ratings16 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral20.0%
Negative0.0%

In-app purchases

1 purchases

DubFilter

One-time1
  • Audio Unit Plugin Support$1.99
None

VAPoly

No in-app purchases

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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