# E3 Controller vs QRS Connect

The clearest difference is update cadence: QRS Connect at every 2 months against E3 Controller's every 11 months. E3 Controller's advantage is iOS requirement (12.0 vs 14.5). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

E3 Controller ships an update every 11 months, QRS Connect every 2 months. The most recent releases landed on October 15, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | E3 Controller | QRS Connect |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[2.9 (9 ratings)](https://appshunter.io/ios/app/e3-controller-us/id509030474/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 57.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free | — |
| Size | 12 MB | 5 MB |
| Requires iOS | **12.0** | 14.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yamaha Corporation of America](https://appshunter.io/developer/408058585) | [QRS Music](https://appshunter.io/developer/1034510122) |

## What reviewers say

### E3 Controller

[App page](https://appshunter.io/ios/app/e3-controller-us/id509030474)

Control your Disklavier E3 or DKC-850 remotely from your iOS device. View song titles and access all functions previously available with the infrared remote. Requires a wireless router connection to your piano.

**Highlights:** Remote control for Disklavier E3/DKC-850, Access all infrared remote functions, View piano control unit screen, Check song titles remotely, Wireless router connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


### QRS Connect

[App page](https://appshunter.io/ios/app/qrs-connect/id1463952547)

**In-app purchases:** none


## Frequently asked questions

### Is E3 Controller free?

E3 Controller is free to download, with no in-app purchases.

### Is QRS Connect free?

QRS Connect is free to download, with no in-app purchases.

### Do E3 Controller or QRS Connect have ads?

Neither E3 Controller nor QRS Connect shows ads.

### Which is updated more often, E3 Controller or QRS Connect?

E3 Controller ships an update every 11 months, and QRS Connect every 2 months. Most recently, E3 Controller was updated on October 15, 2026 and QRS Connect on September 24, 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.*