E3 Controller vs Big Ass Fans
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.
Big Ass Fans
Control your residential fans remotely from anywhere in the world. Adjust fan speeds, set automated comfort levels, and integrate with smart home assistants. Manage LED lights, schedule operations, and utilize special modes like Whoosh and Clean Mode.
- Remote fan speed control (7 speeds)
- Automated comfort level settings
- Smart home assistant integration (Alexa, Google Assistant)
- LED light brightness and color temperature adjustment
- Scheduling and automated operation
- Whoosh mode for natural breezes
- UV-C system status and Clean Mode control
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Control your residential fans from anywhere in the world with the Big Ass Fans app! • Select among your fan’s seven unique speeds • Configure your fan to automatically maintain your ideal comfort level • Learn how to connect your fan to Amazon Alexa or The Google Assistant, for voice control and smart home integration • Adjust your LED light’s brightness and color temperature • Improve energy efficiency by setting up your light to work automatically • Link your fan with ecobee smart thermostat • Group multiple fans together to control them as one • Schedule your fan to make your daily routine even easier • Mimic cooling, natural breezes with Whoosh mode • Turn Clean Mode on or off and check the status of your UV-C system • Get help and find FAQs Having trouble with your fan? Call 877-BIG-FANS to speak with a customer support specialist.
Screenshots
Verdict
The clearest difference is rating: Big Ass Fans at 4.9 against E3 Controller's 2.9. Big Ass Fans also leads on review sentiment (88% vs 57%) and ratings volume (2.2K vs 9). E3 Controller's advantage is iOS requirement (12.0 vs 15.1). 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Big Ass Fans holds the better App Store score, 4.9 against 2.9. That said, the two scores are not equally well evidenced: Big Ass Fans has 2.2K ratings behind it against 9, 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 88% of Big Ass Fans's.
E3 Controller ships an update every 11 months, Big Ass Fans every 2 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | E3 Controller | Big Ass Fans |
|---|---|---|
| Price | Free | Free |
| Rating | 2.9 (9 ratings) | 4.9 (2.2K ratings) — better |
| Positive reviews | 57.1% of reviews | 88.5% of reviews — better |
| Number of ratings | 9 | 2.2K — better |
| Update frequency | Every 11 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.1 |
| Further details — not scored | ||
| Size | 12 MB | 46 MB |
| Age rating | 4+ | 4+ |
| Developer | Yamaha Corporation of America | Delta T LLC |
Customer experience
E3 Controller
Big Ass Fans
Bugs and requests
E3 Controller
Not enough reviews yet to summarise bugs or requests.
Big Ass Fans
Reported bugs
3 issues- Light turning on randomly at night
- Fans disconnecting from WiFi
- Wall controls becoming unresponsive after updates
Requested features
4 requests- Add support for Apple HomeKit
- Improve scheduling and automation features
- Provide more granular speed and light control
- Integrate with more smart home platforms
In-app purchases
E3 Controller
No in-app purchases
Big Ass Fans
No in-app purchases









