# Polychord vs MMP1 Controller

The clearest difference is price: MMP1 Controller at Free against Polychord's $9.99. MMP1 Controller also leads on iOS requirement (10.0 vs 15.0). Polychord's advantage is update cadence (every 2 months vs every 30 months). On ads, in-app purchases and device support there is nothing between them.

MMP1 Controller is free to download; Polychord costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Polychord ships an update every 2 months, MMP1 Controller every 30 months. The most recent releases landed on October 24, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Polychord | MMP1 Controller |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | **[4.4 (39 ratings)](https://appshunter.io/ios/app/polychord-chord-instrument/id402625491/reviews)** | — |
| Number of ratings | **39** | — |
| Positive reviews | 74.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 30 months |
| Monetization | Paid | — |
| Size | 23 MB | 6 MB |
| Requires iOS | 15.0 | **10.0** |
| Devices | iPad | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Apposite](https://appshunter.io/developer/481890610) | [Yamaha Corporation](https://appshunter.io/developer/353469356) |

## What reviewers say

### Polychord

[App page](https://appshunter.io/ios/app/polychord-chord-instrument/id402625491)

Create music with an intuitive interface that makes playing chords easy for everyone. Explore songwriting, strum and solo with confidence, and even add auto-accompaniment. Advanced MIDI features allow integration with popular music production software.

**Highlights:** Play chords from diverse palettes, Strum and solo in key, Auto-accompaniment band feature, MIDI control for DAWs, Songwriting tools

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎵 Intuitive chord progression interface
- 🎹 Excellent MIDI controller functionality
- 🎸 Digital Omnichord replacement
- 📱 Audiobus integration support
- 🎼 Great for music theory learning

**What reviewers complain about**

- ⚠️ App no longer actively developed
- 🐛 Frequent crashes and stability issues
- 📦 Limited built-in sound variety
- 🔄 Compatibility issues with newer iOS versions
- 🎚️ Limited chord selection at once (3x3 grid)

**Reported bugs**

- App crashes during recording
- Incompatible with iOS 8+ on older devices
- MIDI off messages not sent properly
- Sporadic glitches with Logic Pro and GarageBand
- Sound occasionally disappears until app restart

**Requested features**

- Custom chord creation and palette selection
- Copy and paste functionality
- Save and load configurations/presets
- Additional instrument sounds and drum kits
- Retina display support


### MMP1 Controller

[App page](https://appshunter.io/ios/app/mmp1-controller/id1237061545)

**In-app purchases:** none


## Frequently asked questions

### Is Polychord free?

Polychord costs $9.99, with no in-app purchases.

### Is MMP1 Controller free?

MMP1 Controller is free to download, with no in-app purchases.

### Do Polychord or MMP1 Controller have ads?

Neither Polychord nor MMP1 Controller shows ads.

### Which is updated more often, Polychord or MMP1 Controller?

Polychord ships an update every 2 months, and MMP1 Controller every 30 months. Most recently, Polychord was updated on October 24, 2026 and MMP1 Controller on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*