Fettkraft vs VAPolyLoop
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fettkraft
This audio effect plugin is designed to enhance percussion sounds with zero latency. It adds punch and energy to beats without raising RMS levels, offering powerful dispersion for low and mid-range frequencies. Optimized for versatility across genres, it avoids harsh artifacts found in other algorithms.
- Zero-latency dispersion effect
- Enhances percussion punch and energy
- Powerful low and mid-range dispersion
- Near-ideal phase shifting
- Pristine transients
- Avoids harsh 'zappy' qualities
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Fettkraft is a zero-latency dispersion effect tailored for processing percussion sounds. It can be used to make beats more punchy and energetic, without increasing RMS levels. Adapted from an ultra-strong dispersion modelling algorithm, Fettkraft can deliver high levels of dispersion without having to stack multiple plugin instances, unlike all-pass filter-based dispersers. This allows retaining more control when adjusting effect depth, as it avoids cumulative effects that could inadvertently lead to unevenness of adjustment steps across different frequencies. FEATURES: • Powerful dispersion for the low- and lower midrange • Near-ideal phase shifting with a flat frequency response • Key advantages over spectral delays include pristine transients and zero latency • Free of timing disruptions due to extreme sub-bass phase delays that would prevent practical uses in many production scenarios • Tuned to avoid the harsher 'zappy' qualities found in other dispersion algorithms, to maximize versatility across different drum sounds and genres PLEASE NOTE: • AUv3-compatible host app is required • Suported sampling rates: 44.1, 48, 96 kHz
VAPolyLoop
Create complex music with a polyphonic synthesizer and analog-style step sequencer. Features multiple oscillators, a resonant low-pass filter, distortion, and various built-in effects. Export audio in multiple formats and sync with other devices via Ableton Link.
- Polyphonic synthesizer with 3 oscillators
- Analog-style step sequencer
- Resonant low-pass filter
- Distortion and other built-in effects (delay, reverb, EQ)
- Audio Unit Extension (AUv3) support
- Ableton Link and MIDI 2.0 support
- Audio export in AIFF, WAV, CAF, and AAC
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VAPolyLoop features lowpass filter and amplifier which are optimized for playing by step sequencer. VAPolyLoop contains polyphonic synthesizer and analog style step sequencer. The synthesizer consists of three oscillators, resonant low pass filter, amplifier, distortion effect and five LFO. VAPolyLoop operates as a stand alone or as an AudioUnit Extension (AUv3) for iPhone, iPad and Mac. Stand Alone supports Ableton Link, MIDI and audio file export. Built-in Effects include delay, chorus, flanger, reverb, eq and compressor. Project files can be saved in iCloud Drive, so that the project can be accessed from iPhone, iPad or Mac. Main Features Polyphonic Synthesizer. Lowpass filter modeled on diode ladder filter. Distortion Effects Analog style step sequencer. Maximum 8 voice polyphony. it depends on performance of the device it is running. Built-in effects and piano roll sequencer. Audio Export. Linear PCM format (AIFF, WAV and CAF) and compressed format (AAC) Support Audio Unit Extension (AUv3). Support MIDI 2.0. Support Foot Pedal and Per Note Control. Support Ableton Link, Bluetooth MIDI, MIDI In / Out. Works on iPhone, iPad and Mac. Support iCloud Drive to share project files between the platforms. Full Factory Preset: 96, Effect: 40 Improvements Support MIDI Foot Pedal (CC#11, CC#64) MIDI CC Settings are saved. It will be recovered when the app launched in the next time. UI Color can be selected from black, navy or gray. System Requirements iOS 17.0 or later Devices with Apple Silicon are recommended. A13 Fusion or above is highly recommended. if sound is distorted when using a device with less CPU power, reduce number of voices. AudioUnit Extension (AUv3) requires host application which support AudioUnit Extension. AudioUnit Extension is supported by Apple Logic and Apple Garage Band on iOS and macOS. For any other DAW, it depends on the application and some of them don’t support AudioUnit Extension.
Screenshots
Verdict
The clearest difference is price: Fettkraft at $5.99 against VAPolyLoop's $14.99. On rating, ratings volume, ads and in-app purchases 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
Fettkraft costs $5.99 and VAPolyLoop $14.99 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 Fettkraft against 5.0 for VAPolyLoop. Both are backed by a comparable volume of ratings — 2 and 3 respectively.
| Parameter | Fettkraft | VAPolyLoop |
|---|---|---|
| Price | $5.99 — better | $14.99 |
| Rating | 5.0 (2 ratings) | 5.0 (3 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 | 3 — better |
| Update frequency | — | Monthly |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 16.6 | 16.6 |
| Further details — not scored | ||
| Size | 5 MB | 16 MB |
| Age rating | 4+ | 4+ |
| Developer | quantovox | Ryo Togawa |
Customer experience
Fettkraft
VAPolyLoop
In-app purchases
Fettkraft
No in-app purchases
VAPolyLoop
No in-app purchases








