Chordy 2 vs PolyrhythmLab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Chordy 2
This app allows musicians to easily play and control chords with a dedicated interface. It supports various audio and MIDI connections for integration with other music creation tools. Features include chord customization, scale selection, and transposition.
- Easy chord playing with Auto Select
- Detailed chord control (mute notes, add bass/tension)
- Solo Keyboard for individual note playing
- Multiple scale options (Major, Minor)
- Octave Shift and Key Transpose
- Audiobus, Inter-App Audio, and Virtual MIDI support
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Chordy 2 is a chord player app for music creators. With its own UI, you can very easily play chords and chord tones. It supports Audiobus / Virtual MIDI / Inter-App Audio. You can record in GarageBand, control other synth apps, and enjoy a variety of ways. In Chordy 2, detailed chord control such as mute of notes and addition of bass note / tension notes is possible. Suitable for DTM, chord-progression learning, live performance, ear copying and composition support. * Check out the movie of this app: https://youtu.be/mEAlaL65DCg Playing: - Easy chord playing with Auto Select feature (Diatonic Triad/7th) - Select a root note (and a chord type if necessary) to play a chord - Play slash chords with Bass Note feature - Add tension notes to chords - Play every single chord note on Solo Keyboard - 4 scales available (Major, Natural/Harmonic/Melodic Minor). Select Parallel or Relative scale change between major/minor. - Octave Shift (from -2 to +2), Key Transpose feature *Volume/Velocity Knob: Double-tap to reset to the default value. Connection Features: - Audiobus support: You can stream live audio directly to other Audiobus-compatible apps. Audiobus 3 MIDI Routing is also supported. See http://audiob.us for more information. - Inter-App Audio support - Virtual MIDI support: Control other Virtual MIDI compatible apps on your iPad (e.g. Animoog, Sunrizer synth, etc). - Wi-Fi MIDI / MIDI over Bluetooth LE support: Send MIDI to iOS devices and Macs.
PolyrhythmLab
Create complex, evolving musical rhythms and dynamic visual performances. This app offers a unique polyrhythmic engine for sound layers and a live visual mixer with customizable effects and camera controls. Export audio, MIDI, or video of your creations.
- True polyrhythm engine with independent step/pulse counts per layer
- AUv3 plugin support for DAWs like GarageBand and Logic
- Live MIDI output for driving external synths
- Integrated VJ mixer with audio-reactive visuals and effects
- Song mode for arranging patterns into full tracks
- Save and reload groovebox patterns and VJ setups as presets
- Export audio, MIDI, and video recordings
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PolyrhythmLab is a groovebox built around true polyrhythms: every sound layer gets its own step count, pulse count, and rotation, so layers of different lengths interlock and drift in and out of phase instead of locking to one shared grid. NEW IN 2.0 — AUv3 PLUGIN Use PolyrhythmLab as a real instrument inside GarageBand, Logic, AUM, and any other AU-compatible host. Four independent polyrhythmic layers, each exposed as automatable parameters, real MIDI output so your performance actually records as a MIDI region, and its own compact control panel with a live pattern wheel, a randomizer, and optional sync to your session's tempo. NEW IN 2.0 — LIVE MIDI OUTPUT Send a real Note On/Off for every layer hit straight from the main app — one MIDI channel per layer, over a virtual MIDI connection — to drive another synth, app, or piece of hardware in real time, not just sync tempo. NEW IN 2.0 — CAST VJ MIX Send the VJ Mix visuals to a TV or projector over AirPlay or a wired adapter, while your device keeps the full set of live controls. Save and reload VJ Mix setups — visual styles, effects, camera moves, and their LFOs — as named presets, same as patterns. GROOVEBOX • Euclidean-style rhythm engine — set steps, pulses, and rotation per layer • Drums, glitch/textural one-shots, classic synth voices (piano, bell, pad, bass), and melodic synth patches • Per-layer filter, reverb, delay, pitch, and LFOs on every parameter • Randomize engine biased toward musical, playable combinations • Chord modes, scales, and modal note selection for melodic layers SONG MODE Arrange your saved patterns into sections and chain them into a full song. VJ MIX A live visual performance surface: blend two audio-reactive visualizations, layer on real-time color and shader effects — RGB split, kaleidoscope, pixelate, glow, trail — and a 3D camera with zoom, pan, orbit, and tilt, each with its own LFO. Randomize the whole look by hand, or hand it to an autonomous "robot" that keeps remixing itself. Record the performance in real time via ReplayKit, or export a styled video clip. PRESETS Save and reload both groovebox patterns and VJ Mix setups as named presets. EXPORT Render your patterns and songs to audio, or export them as MIDI. No account, no ads, no analytics. Everything is stored locally on your device.
Screenshots
Verdict
The clearest difference is review sentiment: Chordy 2 at 100% against PolyrhythmLab's 0%. Chordy 2 also leads on rating (5.0 vs 1.0) and price ($3.99 vs $4.99). PolyrhythmLab's advantage is update cadence (every 4 weeks vs every 9 months). On ratings volume, ads, in-app purchases and monetization model 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
Chordy 2 costs $3.99 and PolyrhythmLab $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Chordy 2 holds the better App Store score, 5.0 against 1.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 100% of Chordy 2's written reviews are positive against 0% of PolyrhythmLab's.
Chordy 2 ships an update every 9 months, PolyrhythmLab every 4 weeks. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.
| Parameter | Chordy 2 | PolyrhythmLab |
|---|---|---|
| Price | $3.99 — better | $4.99 |
| Rating | 5.0 (2 ratings) — better | 1.0 (1 ratings) |
| Positive reviews | 100.0% of reviews — better | 0.0% of reviews |
| Number of ratings | 2 — better | 1 |
| Update frequency | Every 9 months | Every 4 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPad | iPhone, iPad — better |
| Requires iOS | 12.4 — better | 17.0 |
| Further details — not scored | ||
| Size | 221 MB | 401 MB |
| Age rating | 4+ | 4+ |
| Developer | Studio Phiz | Martin Adler |
Customer experience
Chordy 2
PolyrhythmLab
In-app purchases
Chordy 2
No in-app purchases
PolyrhythmLab
No in-app purchases









