# LC4 Controller vs Sunday Keys

The clearest difference is update cadence: Sunday Keys at every 3 weeks against LC4 Controller's every 26 months. Sunday Keys also leads on ratings volume (115 vs 1). LC4 Controller's advantage is review sentiment (100% vs 71%) and rating (5.0 vs 4.6). 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.

LC4 Controller holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Sunday Keys has 115 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 100% of LC4 Controller's written reviews are positive against 71% of Sunday Keys's.

LC4 Controller ships an update every 26 months, Sunday Keys every 3 weeks. The most recent releases landed on October 15, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | LC4 Controller | Sunday Keys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/lc4-controller-us/id1052405144/reviews)** | [4.6 (115 ratings)](https://appshunter.io/ios/app/sunday-keys/id1615360535/reviews) |
| Number of ratings | 1 | **115** |
| Positive reviews | **100.0% of reviews** | 70.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 26 months | **Every 3 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 9 MB | 201 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPad | **iPad, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Yamaha Corporation of America](https://appshunter.io/developer/408058585) | [Loop Community](https://appshunter.io/developer/664688178) |

## What reviewers say

### LC4 Controller

[App page](https://appshunter.io/ios/app/lc4-controller-us/id1052405144)

This app provides wireless control for a music lab, allowing educators to manage student interactions and broadcast music from anywhere in the room. It includes features like student icon customization, attendance tracking, and access to the iPad's music library for class-wide playback.

**Highlights:** Wireless control of Yamaha LC4 Music Lab, Customize and position student icons, In-app attendance tracker, Integrated notepad, Broadcast music from iPad library, Full hardware function access

**In-app purchases:** none


### Sunday Keys

[App page](https://appshunter.io/ios/app/sunday-keys/id1615360535)

This app provides a comprehensive worship keyboard rig for iPad, allowing users to access and organize their sounds, patches, and setlists. It supports AUv3 instrument plugins and offers powerful audio and MIDI effects for live performance and service preparation.

**Highlights:** AUv3 instrument plugin hosting, Organized sound, patch, and setlist library, Touch-optimized interface, Powerful audio and MIDI effects, Tonic Pad Player for ambient pads, MIDI hardware and Bluetooth support

**In-app purchases:** none

**What reviewers like**

- ✨ High-quality sounds
- 👍 User-friendly interface
- 💡 Innovative AI patch builder
- 🤝 Helpful customer support
- 🚀 Seamless transitions

**What reviewers complain about**

- 💸 High price point
- ⏳ Annual license renewal
- 🤔 Complex registration process
- 🚫 Limited editing of song patches
- ⚠️ Inconsistent drone functionality

**Reported bugs**

- App crashing on iPad
- Drone not working reliably
- Core audio error on iPad
- Sound library installation issues
- App not running on older macOS versions

**Requested features**

- AUv3 plugin support for Logic Pro and GarageBand iOS
- Sampler/looper functionality
- Loop player
- MIDI monitor on main screen displaying chords
- Ability to use third-party plugins


## Frequently asked questions

### Is LC4 Controller free?

LC4 Controller is free to download, with no in-app purchases.

### Is Sunday Keys free?

Sunday Keys is free to download, with no in-app purchases.

### Which has better reviews, LC4 Controller or Sunday Keys?

LC4 Controller is rated higher. LC4 Controller averages 5.0 out of 5 from 1 ratings, while Sunday Keys averages 4.6 from 115 ratings.

### Do LC4 Controller or Sunday Keys have ads?

Neither LC4 Controller nor Sunday Keys shows ads.

### Which is updated more often, LC4 Controller or Sunday Keys?

LC4 Controller ships an update every 26 months, and Sunday Keys every 3 weeks. Most recently, LC4 Controller was updated on October 15, 2026 and Sunday Keys on October 17, 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.*