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Sweet MIDI Player

By Roni Music

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Sweet MIDI Player is a MIDI player for not only auditioning all types of MIDI files, but for modifying the MIDI files themselves.

Use its mixer-like interface to easily edit the control messages, transpose the music, change the tempo, mute desired MIDI channels, and save the end results to disk.

View lyrics synchronized with the music (MIDI Karaoke files).

It also includes a playlist function which allows you to create and manage playlists.

Built in MIDI sound library with support for DLS/SF2 files.

Support for CoreMIDI.

Upload files using iTunes.

This free version is limited to play the first 3/4 of a MIDI file.

Software synthesizer engine licensed from

What's New in Version 3.7.3

New - Made it possible to change the internal audio buffer size. Useful to avoid audio crackles or to improve the timing of the notes.
Bug fix - Keyboard would cover the search text field on iPad in landscape mode with "Split View Mode" enabled.


iPhone Screenshot 1
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iPad Screenshot 1

Customer Reviews

Amazing App

I do have to say that with my large collection of MIDI files, it can handle them very well! I have over 250 files and several playlists. The mixer is great for just either messing around with, or changing the instruments to make your own masterpiece. Lyrics really only work if they're embedded, which most of mine aren't but that's ok. The chord display is accurate, and useful for playing alongside. I also love that custom .dls and .sf2 soundfonts can be imported using "open in…". It's also nice that every screen layout can be scaled and colored to suit your screen.

The default soundfont is ok, personally I prefer to use my own. The synth will drop some notes here and there, but really only when the song is hardcore, or it's in the background and I'm doing something else.

Comparing other MIDI players to this, this is the best.


Outrageous. "In app purchases available" what they mean is you can play snippets of an Midi file, but if you want to play the whole thing, better pony up $15. This is a simple request - create an app that simply plays midi files on the iPhone. Something Apple should do already, but somehow can't swing that or any other band aid app that doesn't cost you an outrageous amount. Despicable marketing.

Simplemente Excelente!!!!

Esta app me permite manejar los cientos de secuencias que tengo, modificarlas a mi gusto y tocarlas directamente hacia mi teclado... simplemente excelente

Sweet MIDI Player
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This app is designed for both iPhone and iPad
  • Free
  • Category: Music
  • Updated:
  • Version: 3.7.3
  • Size: 9.0 MB
  • Languages: English, French, German, Italian, Japanese, Simplified Chinese, Spanish, Swedish, Traditional Chinese
  • Seller:

Compatibility: Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.

Customer Ratings

We have not received enough ratings to display an average for the current version of this application.
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Top In-App Purchases

  1. Upgrade to full version$14.99