# E3 Controller vs Puget Sound Propane

The clearest difference is update cadence: Puget Sound Propane at every 2 months against E3 Controller's every 11 months. 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, Puget Sound Propane every 2 months. The most recent releases landed on October 22, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | E3 Controller | Puget Sound Propane |
| --- | --- | --- |
| 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 | 56 MB |
| Requires iOS | **12.0** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yamaha Corporation of America](https://appshunter.io/developer/408058585) | [Rural Computer Consultants, Inc.](https://appshunter.io/developer/640795441) |

## 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


### Puget Sound Propane

[App page](https://appshunter.io/ios/app/puget-sound-propane/id6468837775)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is E3 Controller free?

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

### Is Puget Sound Propane free?

Puget Sound Propane is free to download, with no in-app purchases.

### Do E3 Controller or Puget Sound Propane have ads?

Neither E3 Controller nor Puget Sound Propane shows ads.

### Which is updated more often, E3 Controller or Puget Sound Propane?

E3 Controller ships an update every 11 months, and Puget Sound Propane every 2 months. Most recently, E3 Controller was updated on October 22, 2026 and Puget Sound Propane on October 25, 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.*