# Midi Poly Grid — MPE & Polyphonic AT Controller

> Mobile MIDI controller app for pad-based music input with MPE and polyphonic aftertouch. (iPhone/iPad app by Andreas Mueller.)

- Source: https://appshunter.io/ios/app/midi-poly-grid/id1633882803 (this page in markdown: same URL + `.md`)
- Developer: [Andreas Mueller](https://appshunter.io/developer/1633882805)
- Category: Music, Productivity
- Price: $3.99
- Rating: 5.00/5 from 7 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 24 MB
- Languages: American English
- Released: 2022-07-12
- Data updated: 2026-08-27
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/midi-poly-grid/id1633882803/reviews.md

## What is Midi Poly Grid?

# Midi Poly Grid

This App is Open Source. Access the code here: https://github.com/anzbert/beat_pads

## Important Disclaimer

This App is **ONLY** usable as a Midi Controller. It does **NOT** produce any sound on its own and requires a host application or a second device with a DAW or other sound production app.

## Information

Midi Poly Grid is a lightweight Midi Controller app for mobile phones and tablets for melodies and finger drumming at home and on the go. Connections can be made virtually to other apps via platform midi channels, or via USB or Bluetooth Midi to other devices.

This app aims to be an easy-to-use pad input device featuring a variety of layouts, intuitive playability and modern modulation options, such as MPE and Polyphonic Aftertouch. It was designed for people that prefer pads to pianos! The focus of this app is not to be a jack-of-all-trades Midi swiss army knife, but instead to be a great at one thing: Intuitive and versatile pad controls.

## Features

- A size-adjustable grid of pads for finger drumming and melody input
- Various layouts and colors, inspired by the Ableton Push
- Presets can be saved with different pad setups
- Innovative MPE and polyphonic Aftertouch modulation with graphical feedback
- Push Style MPE pitchbend and slide
- Send Velocity by Y position on pad, randomly or with a fixed value
- Usable as a standard MIDI device with any PC, Mac or other USB or Bluetooth device
- Optional controls, such as Pitch Bend, Mod Wheel and Sustain
- Highligh a large number of musical scales
- Receives Midi Notes, making the pads usable like a Launchpad
- Custom grid creation based on the note intervals on the X and Y Axis to create Grids inspired by the Harmonic Table, Wicki Hayden, MidiMech and others
- Supports virtual Midi connection to other apps on your device
- Built-In support for the popular finger drumming courses from XpressPads.com
- And more...

## Feedback and Contributions

Anyone is most welcome to contribute, report an issue or start a discussion in the Github repository. Thanks!

## Licence

Licenced under GPL3. The code in this project is freely usable in any other open source project. Enjoy!


## iOS Specific Information

Can be used with any Mac via USB, Bluetooth Midi or WiFi. Usage with PC is limited to WiFi with free third-party software (rtpMidi), and USB with third-party USB midi connectors, due to Apple's limited implementation of USB Midi on iOS.

AUv3 is unfortunately not supported at this time, as it is currently impossible with Flutter. More info about that here: https://github.com/flutter/flutter/issues/16092

## Key features

- Size-adjustable grid of pads
- MPE and polyphonic aftertouch modulation
- Custom grid creation
- Virtual MIDI connection
- Preset saving
- Multiple layouts and colors

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/midi-poly-grid/id1633882803/reviews.md

### 4/5 — Additional Layouts

*2026-01-10*

Hi excellent app but i cant find a way to create a new layout with notes i choose.  If i want to change thevexpresspad notes slightly i cant seem to do that apart from that brilliant.  Thanks

### 5/5 — Best MPE midi controller for IOS

*2024-07-21*

I just love this app. The layout is simple and considered, compared to other MPE keyboard and pad apps I’ve used. A joy to use.

### 5/5 — Amazing

*2024-04-24*

Exactly what I was looking for - MIDI grid controller like Ableton Push or Novation Launchpad, in iPad app form :) If it's not too much trouble, could you please add AUV3 support? Right now you need to switch between fullscreen apps to use it, an option to run your app in a window inside a DAW would make it pretty much perfect!

**Developer response:** Hey thanks for the kind words! I would love to make the app AUv3 compatible! But unfortunately, I can’t do that with Flutter yet, which is the Multiplatform framework I used to create it. The advantage was that I could make it usable with all types of tablets, but the problem with AUv3 is a bit of a bummer.
I guess I could allow the app to be used in splitscreen as a stop gap solution?! I’ll experiment with that idea.

### 4/5 — Auv3 request

*2024-01-23*

I read the GitHub page in your faq regarding auv3 and flutter. However it looks like a user there provides a workaround that they used to get it working. If you got this working as an auv3 app then it’s usefulness would easily 10x since it could then be used in daws as a virtual instrument. Rather than being a cool self contained musical instrument, it would become a powerful compositional tool.

**Developer response:** Thx for the tip. I am following this thread as well, but the solutions are still a bit hacky for my taste, and could easily break with Flutter or iOS updates. I definitely agree that AUv3 support would be awesome though and I am watching that space closely.

### 5/5 — Excellent app to play the fourths strings layout

*2023-03-30, version 0.8.3*

I am always on the lookout for apps that allow one to play music with the fourths strings layout, the very intuitive note arrangement that is used by the Linnstrument, the Novation Launchpad, among others. I was disappointed to find that one of the best such apps, expressionPad, was recently removed from the App Store, but I was quite pleased to discover this app, Beat Pads, which is really excellent and covers all the bases very well. 

A feature request and a recommendation: 

Feature request: I would also love to be able to play using a perfect fifths/fifths strings layout - the string arraignment of cellos, violins, and mandolins. Hopefully it can be added to Beat Pads at some point. 

Recommendation: I would strongly suggest changing the name of the app to a name that better represents what it actually does. I never would have guessed that an app named “Beat Pads” plays actual notes since the name makes it sound like it would be just a drum pad app.

### 5/5 — Build your own

*2022-12-10*

This little app let me create just what I was looking for: a pad controller in a fourths string layout with a bigger than 4x4 grid. The customization is deep, but not bloated, and includes aftertouch and MPE options, so despite the app’s name, it’s great for melodic and harmonic use. In a perfect world, I’d have options for positional velocity, a hold button, and easy switching between layouts, but I’ve already got what I really need for a tiny price. It feel like the kind of tool built to meet one’s own needs and then graciously made available to others who might find it useful. Much thanks to the developer.

**Developer response:** Hey thx for the kind words! I love your suggestions too. If I ever get a larger chunk of time, I would love to implement those.

## Frequently asked questions about Midi Poly Grid

### Does Midi Poly Grid produce sound on its own?

No, Midi Poly Grid is exclusively a MIDI controller and does not produce any sound. It requires a separate host application or DAW on another device to generate audio.

### How can I connect Midi Poly Grid to other devices?

You can connect Midi Poly Grid virtually to other apps on your device via platform MIDI channels. For external devices, connections can be made via USB or Bluetooth MIDI.

### What kind of modulation does Midi Poly Grid offer?

Midi Poly Grid supports innovative MPE (MIDI Polyphonic Expression) and polyphonic Aftertouch modulation, featuring graphical feedback for intuitive control. It also includes Push Style MPE pitchbend and slide.

### Can I customize the pad layout in Midi Poly Grid?

Yes, you can create custom grids based on note intervals on the X and Y axes. This allows for unique layouts inspired by harmonic tables and other musical structures.

### Is Midi Poly Grid compatible with both iOS and Android?

The provided information indicates it is usable on iOS devices (iPhone, iPad, iPod). Usage with PC on iOS is limited to WiFi or third-party USB connectors, while Mac connectivity is more direct via USB, Bluetooth, or WiFi.

### What is the price of Midi Poly Grid?

Midi Poly Grid is a paid application, priced at $3.99. It does not feature in-app purchases or advertisements.

### How often is Midi Poly Grid updated?

The latest version is 1.1.14, last updated on February 14, 2026. This suggests a relatively active development cycle, though specific update frequency is not detailed.

### What is the age rating for Midi Poly Grid?

Midi Poly Grid has an age rating of 4+, making it suitable for a wide range of users interested in music creation.

## Version history (last 5 releases)

### 1.1.14 — 2026-02-14

- Reattempt fixing a Flutter iOS bug where the side drawer menu would close immediately after opening

### 1.1.13 — 2026-02-06

- Fixed iOS bug where the side drawer menu would close immediately after opening.
- Added experimental visualisation mode, inspired by PrimeChords

### 1.1.11 — 2025-10-06

- Revert bugs created in previous release
- Changed layout not to clash with new app window gestures near the top of the screen in iOS 26

### 1.1.5 — 2025-07-19

- Allow all layouts to be displayed mirrored on the X and Y axis in the new Orientation section

### 1.1.4 — 2025-07-08

- Visual layout fixes

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## Related topics

[andreas mueller](https://appshunter.io/ios/topics/andreas-mueller) · [grid music midi player](https://appshunter.io/ios/topics/grid-music-midi-player)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-27.*