# E3 Controller vs PianoDisc Calibrate

The clearest difference is review sentiment: PianoDisc Calibrate at 100% against E3 Controller's 57%. PianoDisc Calibrate also leads on rating (4.0 vs 2.9) and update cadence (every 6 weeks vs every 11 months). E3 Controller's advantage is in-app purchases (none vs 1) and ratings volume (9 vs 1). On price, ads, monetization model and device support there is nothing between them.

Both are free to download. PianoDisc Calibrate sells 1 one-off in-app purchase. E3 Controller asks for nothing beyond the download.

PianoDisc Calibrate holds the better App Store score, 4.0 against 2.9. That said, the two scores are not equally well evidenced: E3 Controller has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 57% of E3 Controller's written reviews are positive against 100% of PianoDisc Calibrate's.

E3 Controller ships an update every 11 months, PianoDisc Calibrate every 6 weeks. The most recent releases landed on September 21, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | E3 Controller | PianoDisc Calibrate |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.9 (9 ratings)](https://appshunter.io/ios/app/e3-controller-us/id509030474/reviews) | **[4.0 (1 ratings)](https://appshunter.io/ios/app/pianodisc-calibrate/id955611164/reviews)** |
| Number of ratings | **9** | 1 |
| Positive reviews | 57.1% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 12 MB | 62 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yamaha Corporation of America](https://appshunter.io/developer/408058585) | [Burgett Inc.](https://appshunter.io/developer/955611163) |

## 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


### PianoDisc Calibrate

[App page](https://appshunter.io/ios/app/pianodisc-calibrate/id955611164)

This utility app allows professional installers to calibrate automatic player pianos equipped with specific systems. It provides access to detailed settings for keys, pedals, and volume controls, streamlining the setup process for trained technicians.

**Highlights:** Key calibration, Pedal settings, Volume control adjustment, Firmware updates, MIDI interface compatibility, SilentDrive HD settings

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Activation Region Key | $999.99 | one-time |


## Frequently asked questions

### Is E3 Controller free?

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

### Is PianoDisc Calibrate free?

PianoDisc Calibrate is free to download, with in-app purchases available.

### Which has better reviews, E3 Controller or PianoDisc Calibrate?

PianoDisc Calibrate is rated higher. E3 Controller averages 2.9 out of 5 from 9 ratings, while PianoDisc Calibrate averages 4.0 from 1 ratings.

### Do E3 Controller or PianoDisc Calibrate have ads?

Neither E3 Controller nor PianoDisc Calibrate shows ads.

### Which is updated more often, E3 Controller or PianoDisc Calibrate?

E3 Controller ships an update every 11 months, and PianoDisc Calibrate every 6 weeks. Most recently, E3 Controller was updated on September 21, 2026 and PianoDisc Calibrate on August 28, 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.*