AUFX vs PolyPipe
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AUFX
This app offers a high-quality, real-time reverb audio effect with a 32-bit DSP engine. It allows for extensive parameter tweaking to create a vast range of sounds, from small rooms to infinite spaces. The app supports hardware input/output and can process audio from other apps via Inter-App Audio or Audiobus.
- High quality 32-bit DSP engine
- Extensive parameter tweaking
- Built-in resonant filters
- Process hardware input/output
- Inter-App Audio and Audiobus support
- Save, load, and share presets
- MIDI controllable
Read full descriptionHide full description
High quality real time reverb audio effect, for everything between small rooms, resonators, and infinitely large spaces. This app is the first in the AUFX series, a collection of simple and powerful audio effect apps. • High quality 32-bit DSP engine. • A multitude of parameters to tweak to get a wide range of sounds. • Built-in resonant filters. • Process hardware input/output. • Process other apps through Inter-App Audio or Audiobus (input/filter/output slots supported). • Save, load and share user presets. • Supports Audiobus2 state saving. • Comes with several bundled presets. • Fully MIDI controllable, including Virtual MIDI. • Background Audio. • Built-in lookahead limiter to prevent clipping. • Record the result directly in app. • Email recordings or export to AudioShare audio document manager app. • Access user presets and recordings through iTunes File Sharing.
PolyPipe
This app is a multi-lane polyphonic sequencer plugin for creating evolving musical patterns. It allows for independent control of rhythm, pitch, and modulation across multiple lanes, generating complex and unique sequences in real-time. Ideal for generative music and experimental pattern creation.
- Multi-lane sequencer with 4 independent lanes
- Pattern-based structure with multiple patterns per lane
- Advanced step parameters (pitch, velocity, gate, probability)
- Chord-aware steps and chord strumming
- Multiple step modes (random, chord, bass, hybrid)
- Polyrhythmic playback with differing lane/pattern lengths
- Probabilistic sequencing with per-step chance
Read full descriptionHide full description
PolyPipe is a multi-lane, polyphonic AUv3 sequencer plugin designed for creating evolving musical patterns rather than fixed, repetitive loops. Instead of thinking in terms of a single step sequence, PolyPipe lets you build multiple independent lanes, each with its own rhythm, pitch logic, octave behavior, probability, and modulation data — all running together as a coherent musical system. It comprises elements of some of my favourite sequencers of all time, all rolled into a single interface. At its core, PolyPipe takes incoming MIDI notes (or internally generated notes) and uses them as a musical “seed.” These notes are then processed through patterns, scales, transposition rules, and step logic to generate new musical phrases in real time. This makes it especially suited for generative music, complex arpeggiation, bass-and-chord splitting, and long-form evolving sequences. Each lane in PolyPipe is its own sequencer voice. A lane contains one or more patterns, and each pattern is made up of steps. Steps don’t just define when a note plays — they can also define how it plays. A step can include pitch offsets, velocity, gate length, strumming, probability, repeats (ratchets), ties for legato behavior, and even chord information. Patterns can be enabled or disabled independently, shifted by octaves, and combined with global transposition. Because lanes can have different lengths, directions, and step modes, the resulting sequences naturally phase against each other, creating variation without manual intervention. PolyPipe applies musical logic at the MIDI output stage rather than hard-coding notes upfront. Pitch values can be forced into a chosen scale and key, allowing even highly experimental patterns to stay musically coherent. Different step modes (such as forward, backward, ping-pong, random, chord, bass, or hybrid note/chord modes) let each lane behave differently, from traditional arpeggios to controlled chaos. PolyPipe Sequencer is built for musicians who want to explore ideas quickly, create unique patterns, and discover results they wouldn’t think to program manually. It rewards experimentation: small changes to probability, repeats, or step logic can dramatically alter the musical output while staying rhythmically locked and musically usable. PolyPipe Features ○ Multi-Lane Sequencer: with 4 independent lanes. ○ Pattern-Based Structure: where each lane contains multiple patterns. ○ Advanced Step Parameters: including pitch offset, velocity, gate length, auto-roll, repeats (ratchets), and legato ties. ○ Chord-Aware Steps: allowing steps to trigger chords, rotated voicing, or individual notes depending on lane mode. ○ Multiple Step Modes such as Up, Down, Ping-Pong, Random, Drunk, Chord, Bass, and hybrid note/chord modes. ○ Chord Strumming: allowing guitar like strumming patterns. ○ Polyrhythmic Playback: through lanes and patterns of differing lengths and directions. ○ Probabilistic Sequencing: with per-step chance and variable repeat behavior for evolving patterns. ○ Octave Transposition Control: per pattern and globally for rapid harmonic variation. ○ MIDI CC Sequencing: allowing lanes to output modulation data. ○ Real-Time MIDI Interaction: where incoming notes influence pitch selection, chords, and playback behavior. ○ Live-Safe Parameter Editing: with immediate feedback and no need to stop playback. ○ Generative-Focused Design: optimized for long-form evolving sequences rather than static loops. ○ Long Patterns: up to 32 steps in length, chain-able up to 128 steps. ○ 4 MIDI Output Ports: allowing each of the 4 phase-locked arpeggiators to be routed to a different instrument. ○ Global Swing: allowing 8th- and 16th-note swing across all 4 arpeggiators. ○ Rhythm Generator: creates rhythmic patterns that are none chord/scale specific.
Screenshots
Verdict
The clearest difference is price: AUFX at $4.99 against PolyPipe's $14.99. AUFX also leads on review sentiment (85% vs 75%) and iOS requirement (9.0 vs 13). PolyPipe's advantage is update cadence (every 2 weeks vs every 2 months). 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
AUFX costs $4.99 and PolyPipe $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.
AUFX holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 28 and 10 respectively. Written reviews point the same way: 85% of AUFX's written reviews are positive against 75% of PolyPipe's.
AUFX ships an update every 2 months, PolyPipe every 2 weeks. The most recent releases landed on November 6, 2026 and October 31, 2026 respectively.
| Parameter | AUFX | PolyPipe |
|---|---|---|
| Price | $4.99 — better | $14.99 |
| Rating | 4.8 (28 ratings) — better | 4.6 (10 ratings) |
| Positive reviews | 85.3% of reviews — better | 75.0% of reviews |
| Number of ratings | 28 — better | 10 |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 9.0 — better | 13 |
| Further details — not scored | ||
| Size | 5 MB | 31 MB |
| Age rating | 4+ | 4+ |
| Developer | Kymatica AB | 4Pockets.com |
Customer experience
AUFX
PolyPipe
Bugs and requests
AUFX
Reported bugs
2 issues- App does not work on iPhone 7
- New version crashes when loading presets
Requested features
3 requests- AUv3 support
- More tutorial content
- Improved bundle pricing
PolyPipe
Not enough reviews yet to summarise bugs or requests.
In-app purchases
AUFX
No in-app purchases
PolyPipe
No in-app purchases









