Best Midi Monitor Apps

248+ iOS apps curated and reviewed

4.0 avg rating

10 free apps

Updated August 2026

Every iPhone needs a few good midi monitor apps. We benchmark 248+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Compare top Midi Monitor Apps (August 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	MIDI Wrench	Free	4.6★ (71)	No	No	Aug 2026
2	MIDI Monitor	Free	—	No	No	Jul 2026
3	ShowMIDI	Free	4.8★ (18)	No	No	Sep 2026
4	MIDI Scope	Free	4.8★ (20)	No	No	Aug 2026
5	Midiflow Monitor (Audiobus)	Free	4.4★ (8)	No	No	Aug 2026
6	Protokol - MIDI/OSC Monitor	Free	4.6★ (16)	No	Yes	Sep 2026
7	MIDI + OSC Monitor Logger Tool	Free	—	No	No	Aug 2026
8	MIDI Aid	$0.99	—	No	No	Sep 2026

Top Picks for Midi Monitor

#1

MIDI Wrench by Christian Schoenebeck d/b/a Crudebyte

MIDI Monitor & MIDI Controller

Editor's Choice

🎵 Music

4.6(71 ratings)

Free

MIDI Wrench screenshot 1

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MIDI Wrench screenshot 3

MIDI Wrench screenshot 4

MIDI Wrench screenshot 5

This app acts as a versatile tool for managing MIDI devices on iOS. It allows you to monitor incoming MIDI messages in real-time and send your own MIDI commands using virtual controls. It's useful for troubleshooting MIDI setups and understanding device communication.

#2

MIDI Monitor by Hiroshi Okawa

Strong Contender

🎵 Music

0.0(0 ratings)

Free

MIDI Monitor screenshot 1

MIDI Monitor screenshot 2

MIDI Monitor screenshot 3

MIDI Monitor screenshot 4

MIDI Monitor screenshot 5

MIDI Monitor screenshot 6

#3

ShowMIDI by Uwyn, LLC

Effortlessly visualize MIDI

Worth Considering

🎵 Music

4.8(18 ratings)

Free

ShowMIDI screenshot 1

ShowMIDI screenshot 2

ShowMIDI screenshot 3

ShowMIDI screenshot 4

This application provides a real-time, glanceable view of all MIDI activity on your computer. It visualizes various MIDI messages and allows you to pause the flow for a data snapshot. It can be used as a standalone tool or an AUv3 plugin within your DAW.

More Midi Monitor apps to explore

Monitor MIDI activity on your iOS device. Filter events by type, group, or channel, with detailed packet interpretation in decimal and hexadecimal. Send feedback directly to the developer.

Monitor MIDI activityFilter events by type, group, or channelDetailed event packet interpretation

Midiflow Monitor (Audiobus)

Midiflow Monitor (Audiobus)

Midiflow Monitor (Audiobus)

MIDI monitoring

This app helps you visualize MIDI data flowing through your Audiobus setup. It's useful for troubleshooting or learning how MIDI works in your music production workflow. It supports background tracking and split-screen viewing.

Monitor MIDI data in AudiobusTrack MIDI in foreground/backgroundUse multiple instances

Protokol - MIDI/OSC Monitor

Protokol - MIDI/OSC Monitor

Protokol - MIDI/OSC Monitor

Control protocol test utility

This utility app monitors and logs various control protocols like MIDI and OSC. It's designed for creators to inspect complex message streams, supporting sources such as Art-Net and gamepads.

MIDI loggingOSC monitoringArt-Net support

MIDI + OSC Monitor Logger Tool

MIDI + OSC Monitor Logger Tool

MIDI + OSC Monitor Logger Tool

Log TCP & UDP OSC Messages

The MIDI monitor

Memody - Voice to MIDI

Memody - Voice to MIDI

Memody - Voice to MIDI

Sing & Hum Melody Recorder

Turn sensors into MIDI music

Transform device sensors and real-world data into MIDI control and musical notes. Create multitrack recordings, adjust performances with per-track controls, and export to any DAW. Connect environmental data to your music.

Sensor-to-MIDI mappingReal-world data integrationMultitrack recording

Syxloom: MIDI SysEx

Syxloom: MIDI SysEx

Syxloom: MIDI SysEx

Capture, Inspect & Restore

MIDI Host: Router & Patchbay

MIDI Host: Router & Patchbay

MIDI Host: Router & Patchbay

Connect All Your MIDI Gear

MIDI Check - Diagnose Tool

MIDI Check - Diagnose Tool

MIDI Check - Diagnose Tool

Check-up your MIDI Connection

$2.99 | 33% OFF

Diagnose and troubleshoot MIDI connections on your devices. View active connections, monitor incoming messages, and filter unwanted data. Record MIDI messages in the background with a clear, intuitive interface.

Detect active MIDI connectionsView incoming MIDI messagesSend test MIDI notes and control messages

Inspect. Control. Rule.

Pocket MIDI Mobile

Pocket MIDI Mobile

Pocket MIDI Mobile

by Morson Japan

Connect your MIDI instrument to your mobile device to monitor and send MIDI data in real-time. This app is ideal for developers and testers working with MIDI instruments and applications, allowing for detailed message monitoring and editing.

Real-time MIDI data monitoringSend note on/off and control change dataSystem exclusive message editor

by Marcos Gennari Patroni

Connect and control your music setup with universal MIDI connectivity. Supports both USB and Bluetooth MIDI devices, offering enhanced control for select Bluetooth gear. Designed for musicians of all levels to manage rigs and focus on performance.

Universal MIDI connectivityUSB MIDI device supportBluetooth (BLE) MIDI device support

by ART Teknika Inc.

This app provides a comprehensive suite of tools for managing and controlling MIDI devices and data. It includes features for monitoring MIDI events and status, editing and storing SysEx data, recording and playing MIDI, and sending program changes. It supports Core MIDI and Network MIDI, and can import MIDI files from other applications.

MIDI event monitorSysEx editor & librarianMIDI recorder & player

KeyPad MIDI Controller

KeyPad MIDI Controller

KeyPad MIDI Controller

SFZ, SF2 Player · Piano & Pads

Transform your device into a professional MIDI controller with touch-optimized piano keys, drum pads, and performance controls. It supports SFZ, SF2, WAV, and M4A samples, and can control iOS apps, hardware synths, and Mac software wirelessly or wired.

Touch-optimized piano keyboard9-pad drum gridXY performance pad

bismark CtrlSlide – MIDI CC

bismark CtrlSlide – MIDI CC

bismark CtrlSlide – MIDI CC

MIDI Control Change Sliders

Real-time MIDI effects

FAQ about Midi Monitor

What are the best midi monitor apps for iPhone?

MIDI Wrench tops our midi monitor apps ranking as of August 2026, with a 4.6-star average from 71 App Store ratings, and it's free to download.

Are there free midi monitor apps for iPhone?

Yes — 10 of the top midi monitor apps we rank are free to download, including MIDI Wrench and MIDI Monitor.

Does MIDI Wrench have ads or in-app purchases?

MIDI Wrench has no ads and has no in-app purchases, according to its App Store listing as of August 2026.

How many midi monitor apps are on the App Store?

We track 248+ midi monitor apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.

What does MIDI Wrench do?

MIDI Wrench is a comprehensive tool for managing MIDI devices on your iPad, iPhone, or iPod touch. It allows you to visualize and monitor MIDI messages sent by connected devices in real-time, and also send your own MIDI messages using virtual controls.

What are the key features of MIDI Wrench?

Key features include listing all CoreMIDI devices and virtual ports, displaying incoming MIDI events, sending MIDI Note-On, Note-Off, and Control Change messages via virtual controls, filtering MIDI events, and copying MIDI events to the iOS clipboard.