# MIDI Sniffer — Capture and Share MIDI Logs

> Capture, view, and share MIDI messages from musical instruments. (iPhone/iPad app by Sven Thoennissen.)

- Source: https://appshunter.io/ios/app/midi-sniffer/id1309533283 (this page in markdown: same URL + `.md`)
- Developer: [Sven Thoennissen](https://appshunter.io/developer/595221583)
- Category: Music
- Price: Free
- Rating: 5.00/5 from 1 App Store ratings
- Age rating: 4+
- Requires: iOS 15.6 · 1 MB
- Languages: American English, German (Germany)
- Released: 2018-01-05
- Data updated: 2026-07-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/midi-sniffer/id1309533283/reviews.md

## What is MIDI Sniffer?

This app allows you to capture incoming MIDI (Musical Instrument Digital Interface) messages, for example from external MIDI keyboards or accordions with a MIDI system. It is also possible to share the entire log as text or MIDI file, for example with app developers asking for a MIDI dump.
Connect a MIDI interface to your Apple device, then connect your MIDI instrument to the interface.

Features:

- Capture MIDI messages in clear text and hexadecimal digits
- Shows timestamps in microseconds precision
- Share the log via text message or email
- Export log as MIDI file
- Establish MIDI Bluetooth LE connections
- Different colors are used for better distinction
- Apply filters to focus on events of interest

## Key features

- Capture MIDI messages (text/hex)
- Microsecond precision timestamps
- Share logs via text/email
- Export logs as MIDI files
- Bluetooth LE MIDI connections
- Message filtering
- Color-coded messages


## Frequently asked questions about MIDI Sniffer

### What is MIDI Sniffer used for?

MIDI Sniffer captures incoming MIDI messages from external instruments like keyboards or accordions. It allows you to view these messages in clear text or hexadecimal format with precise timestamps and share them as text or MIDI files.

### How does MIDI Sniffer connect to instruments?

You connect a MIDI interface to your Apple device, then connect your MIDI instrument to the interface. MIDI Sniffer also supports establishing MIDI Bluetooth LE connections.

### Can I filter MIDI messages with MIDI Sniffer?

Yes, MIDI Sniffer allows you to apply filters to focus on specific MIDI events of interest, making it easier to analyze the data you need.

### What devices does MIDI Sniffer support?

MIDI Sniffer is supported on iPhone, iPad, and iPod devices.

### Is MIDI Sniffer free to use?

Yes, MIDI Sniffer is available for free and does not contain advertisements or in-app purchases.

### How often is MIDI Sniffer updated?

The latest version, 1.2, was released on November 7, 2023. The app was originally released on January 5, 2018, indicating regular updates.

### What is the age rating for MIDI Sniffer?

MIDI Sniffer has an age rating of 4+, making it suitable for a wide range of users.

### What are the benefits of the color-coding in MIDI Sniffer?

Different colors are used for MIDI messages to provide better distinction and make it easier to visually differentiate between various types of messages in the log.

## Version history (last 3 releases)

### 1.2 — 2023-11-07

Fixed an issue where MIDI Sniffer would not show any messages.
Fixed crash when using Bluetooth MIDI for the first time.
Added support for MTC messages.
Added MIDI file export, for example to import the log into a DAW.
Support for dark mode.

### 1.1 — 2019-01-08

Added MIDI clock and filter options.

### 1.0 — 2018-01-05

No release notes.

## Apps similar to MIDI Sniffer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [iGrand Piano CS for iPad](https://appshunter.io/ios/app/igrand-piano-cs-for-ipad/id562914032) | 3.2 (34) | Free | Music |
| [takeamidi](https://appshunter.io/ios/app/takeamidi/id6503200884) | 4.3 (10) | $1.99 | Music |
| [MIDI Recorder with E.Piano](https://appshunter.io/ios/app/midi-recorder-with-epiano/id1448577506) | 4.6 (62) | Free | Music |
| [midi Sampler](https://appshunter.io/ios/app/midi-sampler/id641950873) | 2.6 (5) | $1.99 | Music |
| [iGrand Piano CS](https://appshunter.io/ios/app/igrand-piano-cs/id570661170) | 3.9 (26) | Free | Music |
| [NS MIDI Player](https://appshunter.io/ios/app/ns-midi-player/id1514225088) | 4.5 (181) | Free | Music |

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*