Best Midi Monitor Apps

210+ iOS apps curated and reviewed

4.4 avg rating
16 free apps
Updated June 2026

Every iPhone needs a few good midi monitor apps. We benchmark 210+ of them on App Store rating, freshness, and pricing, then surface the standouts so you don't have to scroll the App Store yourself.

Top Picks for Midi Monitor

ShowMIDI#1

ShowMIDI by Uwyn, LLC

Effortlessly visualize MIDI
Editor's Choice
๐ŸŽต Music
4.9(16 ratings)
Free
ShowMIDI screenshot 1
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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.

MIDI Wrench#2

MIDI Wrench by Christian Schoenebeck d/b/a Crudebyte

MIDI Monitor & MIDI Controller
Strong Contender
๐ŸŽต Music
4.6(65 ratings)
Free
MIDI Wrench screenshot 1
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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.

MIDI Scope#3

MIDI Scope by Kinematic Systems, LLC

MIDI Monitor
Worth Considering
๐ŸŽต Music
4.8(20 ratings)
Free
MIDI Scope screenshot 1
MIDI Scope screenshot 2
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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.

More Midi Monitor apps to explore

4
MIDI Monitor
MIDI Monitor
MIDI Monitor
by Hiroshi Okawa
Free
๐ŸŽต Music
(0)
5
Protokol - MIDI/OSC Monitor
Protokol - MIDI/OSC Monitor
Protokol - MIDI/OSC Monitor
Control protocol test utility
Free

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
๐ŸŽต Music
(15)
free
6
Midiflow Monitor (Audiobus)
Midiflow Monitor (Audiobus)
Midiflow Monitor (Audiobus)
MIDI monitoring
Free

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
๐ŸŽต Music
(9)
free
7
Midi Sheet Music
Midi Sheet Music
Midi Sheet Music
Convert Midi to Sheet Music
Free

Convert MIDI files into playable sheet music. This free application plays music, highlights notes on both piano and sheet music, and offers features like speed adjustment and transposition. Learn your favorite songs with a library of classical pieces and readily available MIDI files.

Convert MIDI to sheet musicSynchronized playback and note highlightingAdjustable music speed
๐ŸŽต Music
(590)
free
8
MIDI + OSC Monitor Logger Tool
MIDI + OSC Monitor Logger Tool
MIDI + OSC Monitor Logger Tool
Log TCP & UDP OSC Messages
Free
๐ŸŽต Music
(0)
9
MIDI Check - Diagnose Tool
MIDI Check - Diagnose Tool
MIDI Check - Diagnose Tool
Check-up your MIDI Connection
$1.99
$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
๐ŸŽต Music
(4)
paid
10
MidiFire
MidiFire
MidiFire
MIDI Signal Processor
$11.99

This app allows users to create complex MIDI processing setups by connecting various modules and ports. It offers essential processing tools, a MIDI clock source, and the ability to save and share custom configurations. Users can also extend functionality with custom rules and specialized modules.

Modular MIDI effect hostingCoreMIDI routing and processingCustomizable MIDI processing setups
๐ŸŽต Music
(16)
free
11
Pocket MIDI Mobile
Pocket MIDI Mobile
Pocket MIDI Mobile
by Morson Japan
$3.99

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
๐ŸŽต Music
(1)
paid
12
KeyPad MIDI Controller
KeyPad MIDI Controller
KeyPad MIDI Controller
SFZ, SF2 Player ยท Piano & Pads
Free

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
๐ŸŽต Music
(5)
free
13
Midi Amuser
Midi Amuser
Midi Amuser
Midi Looper and Arranger
Free

This app allows you to connect, control, and record up to 10 MIDI instruments and controllers across 10 tracks. It manages routing, recalls instrument states, and enables live looping and complex song arrangements with a stable clock and zero latency.

Connect up to 10 MIDI instrumentsConnect up to 10 MIDI controllersZero latency
๐ŸŽต Music
(5)
free
14
NS MIDI Player
NS MIDI Player
NS MIDI Player
Simple MIDI player
Free

This application allows users to play MIDI files on their Apple devices. It supports various MIDI formats, custom sound fonts, and synchronized lyrics. Advanced features like audio export and MIDI output connection are available via a one-time purchase.

Play standard MIDI files (.mid, .midi, .kar)Support for custom SoundFonts (.sf2, .dls)View time-synced lyrics
๐ŸŽต Music
(181)
free with in-app purchases
15
MIDI Designer Pro X
MIDI Designer Pro X
MIDI Designer Pro X
Custom MIDI Controller
Free

Create custom MIDI controllers for any MIDI-enabled hardware or software. Offers extensive customization, a large user-created layout library, and robust MIDI communication. Ideal for musicians and producers seeking a personalized control experience.

Control any MIDI-enabled deviceNetwork, Bluetooth, and USB MIDIExtensive user layout library
๐ŸŽต Music
(266)
freemium
16
OCTACHRON MIDI Drum Sequencer
OCTACHRON MIDI Drum Sequencer
OCTACHRON MIDI Drum Sequencer
MIDI CC AUv3
$9.99

This app is a flexible MIDI drum sequencer for iOS, offering up to 16 tracks with advanced modulation and sequencing. It can be used standalone or as an AUv3 plugin in DAWs, and is optimized for drums but also suitable for melodies. It requires iOS 12 or higher.

16 mutable tracksAUv3 MIDI pluginStandalone operation
๐ŸŽต Music
(98)
paid
17
MIDI Recorder with E.Piano
MIDI Recorder with E.Piano
MIDI Recorder with E.Piano
by Ryouta Kira
Free

Record and play back MIDI performances with an integrated FM E.Piano. Capture musical ideas anywhere using the on-screen keyboard or external MIDI devices. Save recordings in the Standard MIDI File Format 0.

Record and playback MIDI signalsIntegrated FM E.Piano soundsOn-screen keyboard for note input
๐ŸŽต Music
(62)
free with in-app purchases
18
Simple MIDI
Simple MIDI
Simple MIDI
Open Source MIDI Player
Free

This open-source application allows users to play MIDI files on their iOS devices. It's built using Swift Playgrounds and AudioKit, offering a learning opportunity for aspiring developers.

Play MIDI filesOpen source code availableCompatible with Swift Playgrounds
๐ŸŽต Music
(6)
free
19
MIDI Guitar
MIDI Guitar
MIDI Guitar
Play any synth on your guitar
Free

Transform your guitar into a MIDI controller in real-time. This app accurately transcribes your playing into MIDI data, allowing you to control any synth or virtual instrument. It offers low latency and high accuracy, comparable to professional hardware.

Real-time guitar to MIDI transcriptionLow latency and high accuracyControl any synth or virtual instrument
๐ŸŽต Music
(132)
free with in-app purchases
20
UxMIDI Tools
UxMIDI Tools
UxMIDI Tools
CME USB MIDI hardware devices
Free

Configure and update firmware for CME USB MIDI devices. Manage routing, mapping, and filtering of MIDI events for precise control over your music production hardware. Requires a USB lightning adapter for connection.

Firmware updates for CME USB MIDI productsFull product configurationMIDI routing management
๐ŸŽต Music
(1)
free