Comparison

ChordPolyPad vs Ribn

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
Currently charting
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

Ribn

This app provides a unique MIDI controller experience with 8 assignable ribbons. It allows you to record and loop finger movements, adding organic modulation to synthesizers and effects. Control various MIDI-responsive gear, from hardware synths to software instruments.

Highlights
  • 8 MIDI CC ribbon pads
  • Record and loop finger movement
  • Configurable MIDI channel and CC# per ribbon
  • Turn off looping for regular slider functionality
  • Switch between 3 sets of configurations with presets
  • MIDI sending in background
  • iPad landscape mode
Features
Read full description

Ribn is a MIDI controller with 8 assignable ribbons. What makes Ribn unique is its ability to record and loop your finger movement. This allows you to add organic repeating modulation to your synths and effects, kind of like complex LFOs. You can assign a unique MIDI channel and CC# to each ribbon. As long as your gear responds to MIDI CC messages you will be able to control it with Ribn. ** FEATURES ** • 8 MIDI CC ribbon pads • Add modulation to your MIDI hardware synths, effects, eurorack modulars, drum machines, etc. • Configurable MIDI channel and CC# per ribbon • You can name each ribbon to help you identify what parameter it's controlling • Turn off looping on individual ribbons to turn them into regular sliders • Choose any number of ribbons between 1 and 8 • Full screen mode (removes navigation bar to help you focus) • Switch between 3 sets of configurations using presets • MIDI sending works while the app is in the background • iPad landscape mode • Select multiple MIDI outputs • Ribbons record and loop your finger movement • Use a wired MIDI interface, Bluetooth or Wi-Fi • All settings are saved automatically • Works with external hardware as well as other iOS synths • Works on iPhone (including iPhone X) and iPad starting with iOS 10 ** EXAMPLE USES ** • Control hardware MIDI synths parameters like the filter cutoff frequency, resonance, oscillator octave, etc. • Control any soft synth in Ableton Live (or your favorite DAW) by connecting your iOS device to your Mac via Wi-Fi and choosing "Session 1" as the MIDI output in Ribn. • Control your Eurorack modules by running Ribn through a MIDI to CV converter. • Control other iOS synths like the Moog Model 15 or Arturia iSEM. • Control drum machines and effects. For example, try controlling the room size of a reverb effect unit with a looping ribbon or the snappiness of a snare drum on a drum machine. The possibilities are endless. • Daisy chain your MIDI hardware using MIDI Thru ports and assign each ribbon to a different MIDI channel. This way you can control more than one piece of hardware at a time. For example, you can assign the first 4 ribbons to a synth and the last 4 to an effect unit. ** HOW IT WORKS ** • Connect your MIDI gear (like a synth) to your iOS device using a MIDI interface (wired or bluetooth) • Launch Ribn and select your MIDI interface in the settings page. • Find out which CC# and MIDI channel your gear responds to (usually at the end of the manual) and enter this information in RIbn's edit view. • Slide your finger on a ribbon to send CC values and control the parameters on your MIDI gear. ** WHAT IS MIDI AND CC? ** • MIDI is just the way electronic musical instruments talk to each other. • CC (Continuous Controller) is just a way to control various parameters using MIDI. For example, a synth's filter cutoff frequency can be controlled using a MIDI CC signal. ** NOTE ** • Ribn is a MIDI controller and doesn't produce any sounds. To use Ribn you must connect it to a device that responds to MIDI CC signals (check your gear's manual to be sure). • Ribn doesn't send note data, it only sends CC signals (you can't play melodies with it, but you can control various parameters like synthesizer filters, or effects settings). • To connect your iOS device to MIDI gear you will need to buy a MIDI interface. A MIDI interface typically connects to your iOS lightning port and provides standard MIDI DIN ports to connect to your hardware. There are also bluetooth MIDI interfaces that connect wirelessly. Alternatively, you can connect to your Mac over Wi-Fi and control software synths that way. This setup is a little more complex but totally doable (I've tested controlling Ableton Live plugins over Wi-Fi with Ribn and it worked perfectly). • Audiobus and AUv3 are not supported at this time. However, you can still control other iOS synths by routing the internal MIDI ports and having Ribn run in the background.

Screenshots

ChordPolyPad3 screens
Ribn4 screens

Verdict

The call

The clearest difference is price: Ribn at $3.99 against ChordPolyPad's $17.99. Ribn also leads on in-app purchases (none vs 3) and update cadence (every 3 days vs every 2 months). ChordPolyPad's advantage is chart position (#175 vs unranked). On review sentiment, ratings volume, 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 Ribn $3.99 up front. ChordPolyPad sells 3 one-off in-app purchases. Ribn asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Ribn holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 50 and 30 respectively. Written reviews complicate that: 92% of ChordPolyPad's written reviews are positive against 91% of Ribn'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, Ribn every 3 days. The most recent releases landed on September 17, 2026 and September 12, 2026 respectively.

Scorecard7 real differences · 4 level
ChordPolyPad versus Ribn: the parameters behind the verdict, then further details
ParameterChordPolyPadRibn
Price$17.99$3.99 — better
Rating4.6 (50 ratings)4.8 (30 ratings) — better
Positive reviews92.1% of reviews — better90.9% of reviews
Number of ratings50 — better30
Update frequencyEvery 2 monthsEvery 3 days — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#175 — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS15.010.0 — better
Further details — not scored
Size54 MB28 MB
Age rating4+4+
DeveloperLaurent ColsonNebojsa Petrovic

Customer experience

ChordPolyPad

All ratings50 ratings
Positive92.0%
Neutral0.0%
Negative8.0%
Written reviews114 reviews
Positive92.1%
Neutral3.5%
Negative4.4%

Ribn

All ratings30 ratings
Positive96.7%
Neutral0.0%
Negative3.3%
Written reviews33 reviews
Positive90.9%
Neutral3.0%
Negative6.1%

In-app purchases

3 purchases

ChordPolyPad

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

Ribn

No in-app purchases

Questions

Is ChordPolyPad free?
ChordPolyPad costs $17.99, and also offers in-app purchases.
Is Ribn free?
Ribn costs $3.99, with no in-app purchases.
Which has better reviews, ChordPolyPad or Ribn?
Ribn is rated higher. ChordPolyPad averages 4.6 out of 5 from 50 ratings, while Ribn averages 4.8 from 30 ratings.
Do ChordPolyPad or Ribn have ads?
Neither ChordPolyPad nor Ribn shows ads.
Which is updated more often, ChordPolyPad or Ribn?
ChordPolyPad ships an update every 2 months, and Ribn every 3 days. Most recently, ChordPolyPad was updated on September 17, 2026 and Ribn on September 12, 2026.

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