# Keys vs WatsonMIDI

The clearest difference is rating: WatsonMIDI at 5.0 against Keys's 1.0. WatsonMIDI also leads on update cadence (every 11 days vs every 10 months) and price ($1.99 vs $5.99). Keys's advantage is in-app purchases (none vs 4). On ads, monetization model, device support and iOS requirement there is nothing between them.

Keys costs $5.99 and WatsonMIDI $1.99 up front. WatsonMIDI sells 4 one-off in-app purchases. Keys asks for nothing beyond the download.

WatsonMIDI holds the better App Store score, 5.0 against 1.0. That said, the two scores are not equally well evidenced: WatsonMIDI has 8 ratings behind it against 1, so its average is the more settled of the two.

Keys ships an update every 10 months, WatsonMIDI every 11 days. The most recent releases landed on September 10, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Keys | WatsonMIDI |
| --- | --- | --- |
| Price | $5.99 | **$1.99** |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/keys-midi-controller/id1668785508/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/watsonmidi/id6757377108/reviews)** |
| Number of ratings | 1 | **8** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | **Every 11 days** |
| Monetization | Paid | Paid |
| Size | 17 MB | 36 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [LittleCodeShop.com](https://appshunter.io/developer/288684013) | [Dusti Watson](https://appshunter.io/developer/1866486447) |

## What reviewers say

### Keys

[App page](https://appshunter.io/ios/app/keys-midi-controller/id1668785508)

Turn your mobile device into a versatile MIDI master keyboard. Connect wirelessly to musical instruments and DAWs to control virtual instruments and enhance your music production and live performances.

**Highlights:** Transform device into MIDI master keyboard, Connect to musical devices, Send MIDI notes and CC, Control virtual instruments, MIDI over Bluetooth, Customizable MIDI mapping

**Features:** Vision Pro support

**In-app purchases:** none


### WatsonMIDI

[App page](https://appshunter.io/ios/app/watsonmidi/id6757377108)

Capture, organize, and share MIDI performances for pipe and electronic organs. Features include instant transposition, tempo adjustment, and service playlists. Protect your work with encrypted sharing options.

**Highlights:** MIDI recording and playback, Organized library with custom folders, Service playlist creation, Instant transposition and tempo adjustment, Encrypted sharing with usage controls, Universal compatibility with MIDI instruments

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Audition Tier | $49.99 | one-time |
| Recital | $199.99 | one-time |
| Symphony | $499.99 | one-time |
| Maestro | $999.99 | one-time |


## Frequently asked questions

### Is Keys free?

Keys costs $5.99, with no in-app purchases.

### Is WatsonMIDI free?

WatsonMIDI costs $1.99, and also offers in-app purchases.

### Which has better reviews, Keys or WatsonMIDI?

WatsonMIDI is rated higher. Keys averages 1.0 out of 5 from 1 ratings, while WatsonMIDI averages 5.0 from 8 ratings.

### Do Keys or WatsonMIDI have ads?

Neither Keys nor WatsonMIDI shows ads.

### Which is updated more often, Keys or WatsonMIDI?

Keys ships an update every 10 months, and WatsonMIDI every 11 days. Most recently, Keys was updated on September 10, 2026 and WatsonMIDI on September 23, 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.*