DubFilter vs VAPoly
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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
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.
- 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
Read full descriptionHide 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
Verdict
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
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.
| Parameter | DubFilter | VAPoly |
|---|---|---|
| Price | Free — better | $14.99 |
| Rating | 4.7 (71 ratings) | 5.0 (16 ratings) — better |
| Positive reviews | 73.3% of reviews | 80.0% of reviews — better |
| Number of ratings | 71 — better | 16 |
| Update frequency | Every 6 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 17.0 | 15.2 — better |
| Further details — not scored | ||
| Size | 12 MB | 19 MB |
| Age rating | 4+ | 4+ |
| Developer | Amazing Noises | Ryo Togawa |
Customer experience
DubFilter
VAPoly
In-app purchases
DubFilter
- Audio Unit Plugin Support$1.99
VAPoly
No in-app purchases









