StepPolyArp vs Xequence 2
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
StepPolyArp
This app functions as a real-time polyphonic and polyrhythmic MIDI step arpeggiator and sequencer. It can generate melodic patterns from input or operate as a standalone sequencer. Save and sync unlimited presets with iCloud, featuring extensive customization for patterns and step controllers.
- Standalone app and AUv3 MIDI effect plugin
- Arpeggiator and step sequencer modes
- Programmable step matrix with transposition lines
- Polyrhythmic step controllers
- Internal sound bank
- Ableton Link and MIDI sync support
- Unlimited preset saving with iCloud sync
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"StepPolyArp" is a real-time polyphonic and polyrhythmic MIDI step arpeggiator and step sequencer. It can be used as a standalone application or as an AUv3 MIDI effect plug-in. The application and the plug-in can operate as a step arpeggiator, automatically generating melodic patterns from played notes or chords, or as a step sequencer that does not require MIDI input to play. Unlimited presets can be saved locally and synchronized with iCloud. Each preset contains 16 patterns, 5 customizable polyrhythmic step controllers, and a 32-step event matrix with 11 polyphonic and polyrhythmic lines driving the arpeggiator engine. The application supports full internal and external MIDI connections for input and output, Ableton Link synchronization, and MIDI clock synchronization. An internal sound bank is included. The AUv3 MIDI effect plug-in supports multiple instances. A compatible host is required to run the plug-in. The host must support the Audio Unit v3 (AUv3) MIDI effect format. Hosts supporting AUv3 MIDI effect on iOS: Logic Pro, Cubasis, Beatmaker, AUM, Audiobus, NanoStudio, Auria Pro, apeMatrix. Hosts supporting AUv3 MIDI effect on macOS: Logic Pro 10.7 or later. Features: • Standalone application and AUv3 MIDI effect plug-in • Arpeggiator and step sequencer mode • 1 to 32-step programmable matrix • 11 configurable transposition lines • Polyrhythmic lines and clock dividers per line • Mute by line • Gate, velocity, probability, random pitch, random gate, and random velocity per event • 16 patterns by preset • Automatic pattern chaining • 8-octave resizable keyboard • Multitasking support • Stop "Audio Background" automatically after inactivity (15 min, 30 min, 1 h, 2 h, or never) • Sample-accurate timing • Internal sound bank • Tap tempo • Receiving MIDI from external MIDI sources • Receiving external MIDI sync (MIDI clock) • Ableton Link support • Internal routing of inputs, outputs, and MIDI sync • Send MIDI to a virtual port usable as MIDI input by other "Core MIDI" compatible apps • Default velocity, modulation, pan, volume, aftertouch, and pitch bend step controllers • Customizable MIDI setup for step controllers • Arpeggiator and sequencer can conform to the selected scale • Predefined scales and possibility to create custom scales • 6 arpeggiator modes • 1 random mode • 1 chord mode • Randomization panel for generating random patterns with a large number of parameters to control the result • Preset manager with support for in-app purchase packs • "Program Change" support • Preset sharing via "AirDrop", "Mail", "Messages", and other supported services • Native iCloud support • "iCloud Drive" support in the "Files" app on iOS and "Finder" on macOS • Full support of "Windowed Apps" mode on iPad • Undo/Redo • Lockable keyboard (latch mode) Supported MIDI connections: • Virtual "Core MIDI" connections between applications • Any compatible MIDI interface • MIDI over Wi-Fi • MIDI over Bluetooth • Ableton Link (sync and transport)
Xequence 2
A powerful MIDI sequencer, editor, and controller for digital music production on iPhone and iPad. It offers a desktop-class editing experience, robust import/export, and advanced features like MPE support and Ableton Link.
- MIDI sequencer, editor, arranger, and controller
- Desktop-class editing experience
- Robust MIDI file import/export
- MPE support with per-note editing
- Scale support in editors and keyboard
- Ableton Link and Audiobus 3 integration
- Advanced clip-based arranger
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This app is targeted at digital music production enthusiasts & professionals. Xequence is a comprehensive, fast & reliable MIDI sequencer, editor, arranger & controller for iPhone & iPad. Providing a desktop-class editing experience, it is the perfect centerpiece for a hardware studio, or for apps like AUM & Audiobus 3 to create a modular mobile music production environment. HIGHLIGHTS: - Efficient & fast User Interface for an amazing editing workflow - Robust MIDI File Import & Export (notes, controllers, program changes, etc.) - Extensive support for MPE (In-App Purchase) with per-note expression data editing - Support for scales everywhere (keyboard, pianoroll, etc.) - Over 70 included scales in 10 categories - MIDI Time Stretching in all editors - Best-in-class MIDI timing and clock output - Full Ableton Link 3 support - Full Audiobus 3 support - MIDI In & Thru with re-channelization & re-routing - MIDI Sync Master (Clock/Start/Stop/Continue/SPP) to sync other DAWs & sequencers to Xequence, e.g. to use audio tracks, or external drum machines. Several options for compatibility ARRANGER: - Unlimited Clips - Unlimited Tracks - Unlimited Sub Tracks per Track - 64 Undo/Redo steps - Flexible grid - Per-track non-destructive Swing & MIDI Delay - Linked Clips / Clones (editing the original changes all copies) - Powerful clip-based, per-track independent looping - Program changes - Selection tools: Marquee/Rectangle, Same Track, Same Instrument, Linked Clips, Invert, etc. - Editing tools: Create Copy, Create Linked Copy, Unlink, Split, Join, Convert loops to clips, etc. - Global clipboard, even between projects - Movement/Trimming Handles at screen edges for efficient editing PIANOROLL EDITOR: - 256 Undo/Redo steps - Scale-awareness ("folding") - Relative or absolute grid (move by grid increments or snap to nearest grid lines) - Live MIDI previews of all edits - Selection tools: Box, Same Note, Same Key, Same Beat Position, Invert, etc. - Editing tools: Copy, Legato, Quantize, Quantize Ends, Octave +/-, Flip H/V (mirror), Fill clip with selection, etc. - Smart Draw mode: Touch to create, touch again to delete, drag up/down to transpose, drag left/right to change length - Global clipboard, even between projects - Configurable "ghost" overlays - Note velocities quickly adjustable via a handle, or editable like controllers, see below: CONTROLLER EDITOR: - 256 Undo/Redo steps - Selection tools: Box, Same Beat Position, Invert - Selection modes: Add & Replace - Editing tools: Copy, Reduce, Quantize, Compress/Expand, Flip H/V (mirror), Ramp (various curves), Fill clip with selection - Smart Draw mode - Note Velocities can be shown as controllers and edited with the same tools - Configurable vertical grid & value entry KEYBOARD / CONTROLLER: - Scale-aware, very playable single or dual keyboards - Glide support - Adjustable key width - Velocity emulation (via vertical position) - Drum maps and pads, fully editable, 40+ factory maps - Touch ribbons for live control - Controllers can be moved by sliding (ribbon), device rotation (up to three axes at once), like a button (sustain pedal, "trance gates"), or by touching the keys at different vertical positions. All highly configurable. INSTRUMENTS: - Unlimited Instruments (MIDI configurations for devices / apps) - Up to 150controller slots per Instrument - Optional support for (N)RPNs (In-App Purchase) - Loading & Saving of instruments for re-use in other projects, 40+ factory presets included (In-App Purchase) - Compatible with virtually ALL apps and class-compliant MIDI interfaces VARIOUS: - Audio or MIDI Metronome - Note chasing (notes play even when playback starts in the middle) - Controller chasing - Perfect song looping, no dropouts/jitter at loop points - Supports any time signature/BPM (fixed per song) - Includes PolyHymnia, an advanced Generative Music module - Light and Dark themes Please report any issues via our website, we provide quick and comprehensive support!
Screenshots
Verdict
The clearest difference is update cadence: Xequence 2 at every 2 weeks against StepPolyArp's every 2 months. Xequence 2 also leads on monetization model (freemium vs paid). StepPolyArp's advantage is rating (4.8 vs 4.6) and review sentiment (87% vs 78%). On price, 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
StepPolyArp costs $19.99 and Xequence 2 $19.99 up front. StepPolyArp sells 2 one-off in-app purchases and Xequence 2 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
StepPolyArp holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 48 and 65 respectively. Written reviews point the same way: 87% of StepPolyArp's written reviews are positive against 78% of Xequence 2's.
StepPolyArp ships an update every 2 months, Xequence 2 every 2 weeks. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | StepPolyArp | Xequence 2 |
|---|---|---|
| Price | $19.99 | $19.99 |
| Rating | 4.8 (48 ratings) — better | 4.6 (65 ratings) |
| Positive reviews | 86.7% of reviews — better | 77.8% of reviews |
| Number of ratings | 48 | 65 — better |
| Update frequency | Every 2 months | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Paid | Freemium — better |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 15.0 | 14.2 — better |
| Further details — not scored | ||
| Size | 38 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Laurent Colson | Alexander Ewering |
Customer experience
StepPolyArp
Xequence 2
In-app purchases
StepPolyArp
- Dance Horizons$4.99
- Analog Sequence$4.99
Xequence 2
- Enhanced Pack$4.99
Questions
Is StepPolyArp free?
Is Xequence 2 free?
Which has better reviews, StepPolyArp or Xequence 2?
Do StepPolyArp or Xequence 2 have ads?
Which is updated more often, StepPolyArp or Xequence 2?
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