# MIDI Sniffer vs MIDI FX

The clearest difference is in-app purchases: MIDI Sniffer at none against MIDI FX's 1. MIDI FX's advantage is update cadence (every 9 days vs every 36 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. MIDI FX sells 1 one-off in-app purchase. MIDI Sniffer asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for MIDI Sniffer against 5.0 for MIDI FX. Both are backed by a comparable volume of ratings — 2 and 5 respectively.

MIDI Sniffer ships an update every 36 months, MIDI FX every 9 days. The most recent releases landed on November 4, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MIDI Sniffer | MIDI FX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/midi-sniffer/id1309533283/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/midi-fx/id1641511918/reviews) |
| Number of ratings | 2 | **5** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 9 days** |
| Monetization | Free | Free |
| Size | 1 MB | 263 MB |
| Requires iOS | 15.6 | **14.7** |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Sven Thoennissen](https://appshunter.io/developer/595221583) | [Jorge Arroyo](https://appshunter.io/developer/548989572) |

## What reviewers say

### MIDI Sniffer

[App page](https://appshunter.io/ios/app/midi-sniffer/id1309533283)

Capture and share MIDI messages from external instruments. View logs in text or hex with precise timestamps. Export as MIDI files or share via text/email. Supports Bluetooth LE connections and message filtering.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### MIDI FX

[App page](https://appshunter.io/ios/app/midi-fx/id1641511918)

This app allows you to control and process MIDI signals for music creation. It offers features like harmonization, transposition, and sequencing, enabling you to control external or virtual synthesizers and create complex musical arrangements.

**Highlights:** MIDI signal processing, Harmonize and Transpose, Sequencer for synths, Delay and Looper, Filter notes by velocity, Internal instruments

**Features:** Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock app | $9.99 | one-time |


## Frequently asked questions

### Is MIDI Sniffer free?

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

### Is MIDI FX free?

MIDI FX is free to download, with in-app purchases available.

### Which has better reviews, MIDI Sniffer or MIDI FX?

MIDI Sniffer and MIDI FX are both rated 5.0 out of 5 on the App Store, from 2 and 5 ratings respectively.

### Do MIDI Sniffer or MIDI FX have ads?

Neither MIDI Sniffer nor MIDI FX shows ads.

### Which is updated more often, MIDI Sniffer or MIDI FX?

MIDI Sniffer ships an update every 36 months, and MIDI FX every 9 days. Most recently, MIDI Sniffer was updated on November 4, 2026 and MIDI FX on November 3, 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.*