Comparison

E3 Controller vs QRSFinder

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

E3 Controller

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
Read full description

E3 Controller is an application designed to enable remote control of a Disklavier E3 or DKC-850. All functions that were possible with the infrared remote control (that was included with the Disklavier E3 or DKC-850) have been made available on iOS devices (iPhone/iPod touch/iPad). Moreover, the E3 Controller displays the screen of the control unit of Disklavier, so you don't have to physically go to the piano to confirm, for example, a song title. All that's required is your ability to access the wireless router that is connected to your Disklavier. Requirements: - Disklavier E3 Version 3.20 or later, or DKC-850 Version 3.20 or later - Wireless router Usage note: * Connect Disklavier to the wireless router by LAN cable and choose that same network in the Wi-Fi setting of iPhone/iPod touch/iPad. * If the wireless router has several local networks, confirm that the Disklavier and the iOS device are connected to the same LAN. For more detail, refer to the manual that came with your wireless router. User's Guide: You can access the E3 Controller User's Guide by tapping the "triangle" button in the lower-right corner of the display.

About

QRSFinder

Easily locate QRS PNOmation systems on your network. Connect directly to a single PNO environment or view a list of all network systems by serial number. Tap a serial number to launch the web app.

Highlights
  • Network QRS PNOmation system discovery
  • Stand Alone and Network mode support
  • List systems by serial number
  • Direct web app launch via serial number
  • Single PNO environment connection
Features
Read full description

A handy app that will help you find the QRS PNOmation systems on your network. Works great for Pianos in Stand Alone or Network mode. Just launch the app to be connected in a single PNO environment, or receive a listing of all PNO systems on your network by serial number. Just Tap the serial number to load the PNO web app.

Screenshots

E3 Controller2 screens
QRSFinder3 screens

Verdict

The call

The clearest difference is review sentiment: E3 Controller at 57% against QRSFinder's 21%. QRSFinder's advantage is update cadence (every 6 weeks vs every 11 months). On price, ads, in-app purchases and monetization model there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

E3 Controller ships an update every 11 months, QRSFinder every 6 weeks. The most recent releases landed on September 21, 2026 and July 30, 2026 respectively.

Scorecard2 real differences · 8 level
E3 Controller versus QRSFinder: the parameters behind the verdict, then further details
ParameterE3 ControllerQRSFinder
PriceFreeFree
Rating2.9 (9 ratings) — better—
Positive reviews57.1% of reviews — better21.2% of reviews
Number of ratings9 — better—
Update frequencyEvery 11 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS12.0 — better13.0
Further details — not scored
Size12 MB64 MB
Age rating4+4+
DeveloperYamaha Corporation of AmericaQRS Music

Customer experience

E3 Controller

All ratings9 ratings
Positive44.4%
Neutral11.1%
Negative44.4%
Written reviews7 reviews
Positive57.1%
Neutral0.0%
Negative42.9%

QRSFinder

Written reviews52 reviews
Positive21.2%
Neutral1.9%
Negative76.9%

In-app purchases

None

E3 Controller

No in-app purchases

None

QRSFinder

No in-app purchases

Questions

Is E3 Controller free?
E3 Controller is free to download, with no in-app purchases.
Is QRSFinder free?
QRSFinder is free to download, with no in-app purchases.
Do E3 Controller or QRSFinder have ads?
Neither E3 Controller nor QRSFinder shows ads.
Which is updated more often, E3 Controller or QRSFinder?
E3 Controller ships an update every 11 months, and QRSFinder every 6 weeks. Most recently, E3 Controller was updated on September 21, 2026 and QRSFinder on July 30, 2026.

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