# Knob Lab vs MIDI Expression Control

The clearest difference is rating: MIDI Expression Control at 5.0 against Knob Lab's 4.3. MIDI Expression Control also leads on in-app purchases (none vs 4) and review sentiment (100% vs 92%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Knob Lab sells 4 one-off in-app purchases. MIDI Expression Control asks for nothing beyond the download.

MIDI Expression Control holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 12 and 6 respectively. Written reviews point the same way: 92% of Knob Lab's written reviews are positive against 100% of MIDI Expression Control's.

Knob Lab ships an update every 5 months, MIDI Expression Control every 6 months. The most recent releases landed on October 1, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Knob Lab | MIDI Expression Control |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (12 ratings)](https://appshunter.io/ios/app/knob-lab/id727466234/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/midi-expression-control/id1200670783/reviews)** |
| Number of ratings | **12** | 6 |
| Positive reviews | 91.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 66 MB | 6 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Uri Nachmias](https://appshunter.io/developer/316332139) | [Robert Jonkman](https://appshunter.io/developer/1200670782) |

## What reviewers say

### Knob Lab

[App page](https://appshunter.io/ios/app/knob-lab/id727466234)

This application transforms your iOS device into a versatile MIDI controller. It allows you to manage various DAWs and music software remotely via USB, WiFi, or Bluetooth. Create intricate control setups with a single rotary knob, affecting multiple MIDI destinations simultaneously.

**Highlights:** Remote DAW control, USB, WiFi, Bluetooth connectivity, Virtual MIDI support, Audiobus integration, Complex control mapping, iPad support, MIDI logger

**Features:** Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Two Knob Layout | $0.99 | one-time |
| Four/Six Knob Layout | $0.99 | one-time |
| Nine/Twelve knob layout. | $0.99 | one-time |
| Unlock all layouts | $1.99 | one-time |


### MIDI Expression Control

[App page](https://appshunter.io/ios/app/midi-expression-control/id1200670783)

This application allows users to modify settings for MIDI Expression devices. Ensure your device has firmware version 2.6 or higher for iOS compatibility.

**Highlights:** Change device settings, Compatible with MIDI Expression devices, iOS firmware compatibility check, Free to download

**In-app purchases:** none


## Frequently asked questions

### Is Knob Lab free?

Knob Lab is free to download, with in-app purchases available.

### Is MIDI Expression Control free?

MIDI Expression Control is free to download, with no in-app purchases.

### Which has better reviews, Knob Lab or MIDI Expression Control?

MIDI Expression Control is rated higher. Knob Lab averages 4.3 out of 5 from 12 ratings, while MIDI Expression Control averages 5.0 from 6 ratings.

### Do Knob Lab or MIDI Expression Control have ads?

Neither Knob Lab nor MIDI Expression Control shows ads.

### Which is updated more often, Knob Lab or MIDI Expression Control?

Knob Lab ships an update every 5 months, and MIDI Expression Control every 6 months. Most recently, Knob Lab was updated on October 1, 2026 and MIDI Expression Control on September 23, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*