Comparison

ChordPolyPad vs Ruismaker FM

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ChordPolyPad

This app is a versatile MIDI chord player that allows users to create and play complex chord sets. It offers extensive customization for pads, MIDI controls, and chord generation, functioning as a standalone app or an AUv3 MIDI effect plugin.

Highlights
  • Standalone app and AUv3 MIDI effect plugin
  • 128 pads per preset
  • Customizable X/Y MIDI controllers
  • Advanced random chord generator
  • Internal and external MIDI support
  • Chord filtering and quantizing
  • Preset manager with in-app purchases
Features
Read full description

"ChordPolyPad" is a MIDI chords player that lets you create chord sets using a large internal library, any custom combination of notes, or randomly generated chords. Each preset contains either 8 groups of 16 pads or 2 groups of 64 pads, for a total of 128 pads. In addition to playing chords, each pad can generate customizable MIDI controls on its horizontal and vertical axes, allowing expressive real-time modulation. "ChordPolyPad" can be used as a standalone application or as an AUv3 MIDI effect plug-in. The app supports full internal and external MIDI input and output. An internal sound bank is included for immediate use. The AUv3 MIDI effect plug-in supports multiple instances. A compatible host is required and 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 • 8 groups of 16 pads or 2 groups of 64 pads per preset (128 pads) • Assignable MIDI port and MIDI channel for each pad • Customizable X/Y controller per pad • Per-note velocity control for each chord • Strumming configuration per pad • Copy and paste for pads and groups • Drag and drop chords directly from the library • Chord filtering and quantizing based on the selected scale • Predefined scales and possibility to create custom scales • Advanced random chord generator with diverse musical moods featuring voice leading and context-aware harmonic progressions for naturally flowing compositions • Stop "Audio Background" automatically after inactivity (15 min, 30 min, 1 h, 2 h, or never) • Internal sound bank • Receive MIDI notes and control from external devices • Send MIDI to a virtual port usable as MIDI input by other "Core MIDI" compatible apps • Preset manager with support for in-app purchase packs • "Program Change" support • Preset sharing support by "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 for "Windowed Apps" mode on iPad • Undo/Redo Supported MIDI connections: • Virtual "Core MIDI" connections between apps • Any compatible MIDI interface • MIDI over Wi-Fi • MIDI over Bluetooth

About

Ruismaker FM

Design unique percussion sounds from scratch with a flexible synthesis engine. Create everything from traditional drums to unconventional effects. Offers a standalone Euclidean sequencer for pattern creation and export options.

Highlights
  • FM synthesis engine for percussion
  • Create custom drum sounds
  • Euclidean sequencer
  • AUv3 compatible
  • No samples used
  • MIDI CC controllable
Features
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Here comes the the crazy twin-sister of Ruismaker, designed for people who want to design their own percussion sounds from scratch. Ruismaker FM's simple, yet flexible synthesis engine lets you create anything from snaredrums, kickdrums and spacy toms to weird and unconventional percussive sounds and effects. Ruismaker FM is a unique drumsynth plugin (i.e. it does not use samples), which is coupled with a creative Euclidean sequencer when run in standalone mode. The plugin is fully AUv3 (Audio Unit) compatible: - Seamless integration with Garageband and other AU hosts - Audio Unit Instrument: making music on iOS doesn't get more convenient - Supports AUv3 Multi-Out in AUM and ApeMatrix - Each sound is modeled using authentic analog and FM algorithms; - Comes with dozens of unique customizable models - Does not use any samples; all sounds are synthesized in realtime, on the fly - Light on the CPU, so you can run lots of Ruismaker FMs simultaneously - Fully automatable parameters (requires host support) and MIDI CC controllable - Has its own preset manager The standalone sequencer is refreshingly different: - Program patterns using Euclidean algorithms - Powerful random feature and mutation probability settings per channel - Syncs with Ableton Link or MIDI Clock - Exports WAV and MIDI - Compatible with Audiobus 3 (including MIDI IN/OUT mode) - CoreMIDI In and Out - AU MIDI output for on-screen pads User manual available on Ruismaker.com

Screenshots

ChordPolyPad3 screens
Ruismaker FM2 screens

Verdict

The call

The clearest difference is price: Ruismaker FM at $4.99 against ChordPolyPad's $17.99. Ruismaker FM also leads on in-app purchases (none vs 3) and rating (5.0 vs 4.6). ChordPolyPad's advantage is review sentiment (92% vs 83%). On ratings volume, update cadence, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

ChordPolyPad costs $17.99 and Ruismaker FM $4.99 up front. ChordPolyPad sells 3 one-off in-app purchases. Ruismaker FM asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ruismaker FM holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 51 and 54 respectively. Written reviews complicate that: 92% of ChordPolyPad's written reviews are positive against 83% of Ruismaker FM's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

ChordPolyPad ships an update every 2 months, Ruismaker FM every 5 weeks. The most recent releases landed on November 1, 2026 and October 24, 2026 respectively.

Scorecard6 real differences · 4 level
ChordPolyPad versus Ruismaker FM: the parameters behind the verdict, then further details
ParameterChordPolyPadRuismaker FM
Price$17.99$4.99 — better
Rating4.6 (51 ratings)5.0 (54 ratings) — better
Positive reviews92.1% of reviews — better83.3% of reviews
Number of ratings5154 — better
Update frequencyEvery 2 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.011.0 — better
Further details — not scored
Size54 MB8 MB
Age rating4+4+
DeveloperLaurent ColsonBram Bos

Customer experience

ChordPolyPad

All ratings51 ratings
Positive92.2%
Neutral0.0%
Negative7.8%
Written reviews114 reviews
Positive92.1%
Neutral3.5%
Negative4.4%

Ruismaker FM

All ratings54 ratings
Positive98.1%
Neutral1.9%
Negative0.0%
Written reviews36 reviews
Positive83.3%
Neutral8.3%
Negative8.3%

In-app purchases

3 purchases

ChordPolyPad

One-time3
  • Retro Pop$4.99
  • Clubwave$4.99
  • Liminal Spaces$4.99
None

Ruismaker FM

No in-app purchases

Questions

Is ChordPolyPad free?
ChordPolyPad costs $17.99, and also offers in-app purchases.
Is Ruismaker FM free?
Ruismaker FM costs $4.99, with no in-app purchases.
Which has better reviews, ChordPolyPad or Ruismaker FM?
Ruismaker FM is rated higher. ChordPolyPad averages 4.6 out of 5 from 51 ratings, while Ruismaker FM averages 5.0 from 54 ratings.
Do ChordPolyPad or Ruismaker FM have ads?
Neither ChordPolyPad nor Ruismaker FM shows ads.
Which is updated more often, ChordPolyPad or Ruismaker FM?
ChordPolyPad ships an update every 2 months, and Ruismaker FM every 5 weeks. Most recently, ChordPolyPad was updated on November 1, 2026 and Ruismaker FM on October 24, 2026.

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