# MultiTracks.com ChartBuilder vs Sunday Keys

The clearest difference is in-app purchases: Sunday Keys at none against MultiTracks.com ChartBuilder's 4. Sunday Keys also leads on review sentiment (71% vs 63%). MultiTracks.com ChartBuilder's advantage is ratings volume (6K vs 114) and rating (4.8 vs 4.6). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. MultiTracks.com ChartBuilder sells 4 in-app purchases, starting at $2.99 per month. Sunday Keys asks for nothing beyond the download.

MultiTracks.com ChartBuilder holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: MultiTracks.com ChartBuilder has 6K ratings behind it against 114, so its average is the more settled of the two. Written reviews complicate that: 63% of MultiTracks.com ChartBuilder's written reviews are positive against 71% of Sunday Keys's, so the app with the better star average is not the one people write more warmly about.

MultiTracks.com ChartBuilder ships an update monthly, Sunday Keys every 3 weeks. The most recent releases landed on September 25, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | MultiTracks.com ChartBuilder | Sunday Keys |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (6K ratings)](https://appshunter.io/ios/app/multitrackscom-chartbuilder/id1208264687/reviews)** | [4.6 (114 ratings)](https://appshunter.io/ios/app/sunday-keys/id1615360535/reviews) |
| Number of ratings | **6K** | 114 |
| Positive reviews | 62.8% of reviews | **70.9% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Subscription | **Free with in-app purchases** |
| Best chart rank | **#144** | — |
| Size | 283 MB | 201 MB |
| Requires iOS | 15.4 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [MultiTracks.com](https://appshunter.io/developer/751755887) | [Loop Community](https://appshunter.io/developer/664688178) |

## What reviewers say

### MultiTracks.com ChartBuilder

[App page](https://appshunter.io/ios/app/multitrackscom-chartbuilder/id1208264687)

**Currently charting:** #144 Top Grossing · Music (US App Store)

Customize song charts with adjustable keys, capo settings, and chord displays. Add annotations, create setlists, and sync with audio playback for seamless practice and performance. Access a vast library of charts with a subscription.

**Highlights:** Endless chart customization, Adjustable key, capo, and chord display, In-app annotations and highlighting, Setlist creation and collaboration, Sync with audio playback, Multiple chart type options

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ChartBuilder App | $2.99 | per month |
| Solo Practice Bundle | $6.99 | per month |
| Content Subscription | $14.99 | per month |
| Chart Pro | $21.49 | per month |

**What reviewers like**

- 🚀 Great resource for worship teams
- 👍 Helpful for practice and live performances
- 🔒 Protects intellectual property
- 🔧 Customizable chord charts and setlists
- 🎨 Clean and intuitive user interface

**What reviewers complain about**

- 🐛 Buggy and unstable at times
- 🔑 Subscription issues and login problems
- 🔇 Audio playback and syncing issues
- 🚫 Lacks some basic features like annotation
- 💰 Expensive for the issues experienced

**Reported bugs**

- Crashes and freezes on launch
- Inconsistent key changes and song resets
- Sync issues between devices and the web portal
- Screenshots triggering account disabling warnings
- Inability to use app while locked or in background

**Requested features**

- Ability to customize arrangements and parts
- Improved offline functionality
- More control over click track and vocal cues
- Better integration with other apps and devices
- Increased font size and accessibility options


### 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 MultiTracks.com ChartBuilder free?

MultiTracks.com ChartBuilder is free to download, with in-app purchases available.

### Is Sunday Keys free?

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

### Which has better reviews, MultiTracks.com ChartBuilder or Sunday Keys?

MultiTracks.com ChartBuilder is rated higher. MultiTracks.com ChartBuilder averages 4.8 out of 5 from 6K ratings, while Sunday Keys averages 4.6 from 114 ratings.

### Do MultiTracks.com ChartBuilder or Sunday Keys have ads?

Neither MultiTracks.com ChartBuilder nor Sunday Keys shows ads.

### Which is updated more often, MultiTracks.com ChartBuilder or Sunday Keys?

MultiTracks.com ChartBuilder ships an update monthly, and Sunday Keys every 3 weeks. Most recently, MultiTracks.com ChartBuilder was updated on September 25, 2026 and Sunday Keys on September 18, 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.*