E3 Controller vs QRSFinder
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Remote control for Disklavier E3/DKC-850
- Access all infrared remote functions
- View piano control unit screen
- Check song titles remotely
- Wireless router connectivity
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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.
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.
- 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
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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
Verdict
The clearest difference is review sentiment: E3 Controller at 57% against QRSFinder's 21%. E3 Controller also leads on rating (2.9 vs 2.6). QRSFinder's advantage is update cadence (every 6 weeks vs every 11 months). On price, ratings volume, ads and in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
E3 Controller holds the better App Store score, 2.9 against 2.6. Both are backed by a comparable volume of ratings — 9 and 9 respectively. Written reviews point the same way: 57% of E3 Controller's written reviews are positive against 21% of QRSFinder's.
E3 Controller ships an update every 11 months, QRSFinder every 6 weeks. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | E3 Controller | QRSFinder |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (9 ratings) — better | 2.6 (9 ratings) |
| Positive reviews | 57.1% of reviews — better | 21.2% of reviews |
| Number of ratings | 9 | 9 |
| Update frequency | Every 11 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 12.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 12 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Yamaha Corporation of America | QRS Music |
Customer experience
E3 Controller
QRSFinder
Bugs and requests
E3 Controller
Not enough reviews yet to summarise bugs or requests.
QRSFinder
Reported bugs
46 issues- Restarts every time app is opened
- Volume sliders require diligence
- App disconnects continually
- App won't load
- Lady loudly announces IP address at night
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- App doesn't scroll to end of album
- Search tool is horrible
- App crashes or disconnects
- Does not allow connection
- Super slow loading
- Does not find piano on home Wi-Fi
- Only works when connected directly to piano
- Constant toggling between networks
- App never works correctly
- Impossible to start and connect
- Disconnects all the time
- Installers can't figure it out
- Doesn't connect to PNOmation II system
- Tells me 'no pianos found on this network'
- White screen after deleting/reinstalling
- Buggy, crashes constantly
- UX is terrible
- Doesn't stay connected
- Cannot reset
- Won't shut off or change volume
- Playlists get deleted
- Difficult to use, not intuitive
- Loses contact frequently
- Hard to get reconnected
- Half the time or more it doesn't find the piano
- Quits unexpectedly
- Secondary audio stops working
- No differentiating songs with voice/instruments
- Plays random song instead of selected
- App will not allow choosing a song to play
- Defaults back to a random song
- Refuses to play desired song
- Won't connect to the piano
- Automatically disconnects from local network
- Cannot find piano on network
- New updates cause piano to lose connection
- Wireless system keeps shutting down
- App shows Bluetooth connection but requires local Wi-Fi
- SSID cannot be hidden for connection
- When adding single song, many others are added
- Editing a playlist is almost impossible
Requested features
8 requests- Add monthly all-access subscription
- Make purchasing songs/albums easier (e.g., Apple Pay)
- Fix UI to be more user-friendly
- Add ability to scan songs and albums easier
- Hire better app developers
Show 3 moreShow fewer
- Overhaul interface for 21st century
- More solo singers with piano-only songs
- Cheaper price tag for library
In-app purchases
E3 Controller
No in-app purchases
QRSFinder
No in-app purchases
Questions
Is E3 Controller free?
Is QRSFinder free?
Which has better reviews, E3 Controller or QRSFinder?
Do E3 Controller or QRSFinder have ads?
Which is updated more often, E3 Controller or QRSFinder?
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