# GridInstrument vs Velocity Keyboard

The clearest difference is price: GridInstrument at $3.99 against Velocity Keyboard's $9.99. GridInstrument also leads on iOS requirement (8.0 vs 11.0). Velocity Keyboard's advantage is rating (4.8 vs 4.5) and ratings volume (101 vs 11). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.

GridInstrument costs $3.99 and Velocity Keyboard $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Velocity Keyboard holds the better App Store score, 4.8 against 4.5. That said, the two scores are not equally well evidenced: Velocity Keyboard has 101 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 83% of GridInstrument's written reviews are positive against 82% of Velocity Keyboard's, so the app with the better star average is not the one people write more warmly about.

GridInstrument ships an update weekly, Velocity Keyboard every 9 days. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | GridInstrument | Velocity Keyboard |
| --- | --- | --- |
| Price | **$3.99** | $9.99 |
| Rating | [4.5 (11 ratings)](https://appshunter.io/ios/app/gridinstrument/id1296511558/reviews) | **[4.8 (101 ratings)](https://appshunter.io/ios/app/velocity-keyboard/id1462605052/reviews)** |
| Number of ratings | 11 | **101** |
| Positive reviews | **83.3% of reviews** | 82.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Paid | Paid |
| Size | 15 MB | 12 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Decidedly, LLC](https://appshunter.io/developer/783782943) | [Blue Mangoo Consulting Company Limited](https://appshunter.io/developer/1475107602) |

## What reviewers say

### GridInstrument

[App page](https://appshunter.io/ios/app/gridinstrument/id1296511558)

This app transforms your iOS device into a unique musical instrument with a grid-based interface. Explore over 20 musical modes and various grid layouts. It also supports external MIDI controllers like the Launchpad for expanded creative possibilities.

**Highlights:** Grid-based note arrangement, Launchpad integration, Over 20 musical modes, Multiple grid layouts, Core MIDI out, Audiobus 3 MIDI support

**Features:** Vision Pro support

**In-app purchases:** none


### Velocity Keyboard

[App page](https://appshunter.io/ios/app/velocity-keyboard/id1462605052)

This app offers a versatile MPE MIDI controller with advanced velocity sensing and multiple interface layouts. It provides extensive MIDI CC control and flexible modes for both MPE and non-MPE synthesizers, enhancing musical expression.

**Highlights:** Advanced velocity sensing algorithm, Four interface layouts (Keyboard, String, Scale, Drum Pad), Standalone app and Audio Unit support, 8 simultaneous MIDI CC sources, Smooth MIDI pitch bending, Custom scale highlighting, Pitch bend correction algorithm

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GridInstrument free?

GridInstrument costs $3.99, with no in-app purchases.

### Is Velocity Keyboard free?

Velocity Keyboard costs $9.99, with no in-app purchases.

### Which has better reviews, GridInstrument or Velocity Keyboard?

Velocity Keyboard is rated higher. GridInstrument averages 4.5 out of 5 from 11 ratings, while Velocity Keyboard averages 4.8 from 101 ratings.

### Do GridInstrument or Velocity Keyboard have ads?

Neither GridInstrument nor Velocity Keyboard shows ads.

### Which is updated more often, GridInstrument or Velocity Keyboard?

GridInstrument ships an update weekly, and Velocity Keyboard every 9 days. Most recently, GridInstrument was updated on October 26, 2026 and Velocity Keyboard on October 24, 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.*