MIDI Opener User Reviews

MIDI Opener
MIDI Opener
MartianRover, LLC

Top reviews

Excellent!

I’ve been using this app for a while and the most recent updates are out of this world! The ability to change instruments and mute certain tracks is great to experiment with, and it doesn’t cost me my first born to unlock all the goodies!

P.S. I forgot I had Rick Astley queued up previously so after the update I thought the devs were Rick-rolling me lol
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Crashed after one play

After I downloaded the app and uploaded one of my personal midi files, it played well. However, it does not load the app anymore. It's a shame because I was hoping to use this to audition my compositions for any changes I might make before publication. Even after restarting my ip14pro 512, no luck.
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Response from developer

I’m really sorry that’s happening. We test with hundreds of files and dozens of sound fonts to avoid this very thing, but clearly the app needs to be more resilient. If you’re willing to help fix this, please get in contact with us by following the App Support link from the App Store, or tap the blue safari button found in the app at the top left of the Settings screen. In the meantime, we’ll try to do better testing.

New update makes a great app greater!

Love it! If you are on the fence on downloading this, then don’t worry. This is by far the best midi playback app I have seen.

Response from developer

Thank you!

good app but…

I love how I’m able to change instruments and tempo but the changing key option breaks every song, because whenever I open the app with the song I played before, it sounds fine, but when I choose a different song, the song is in the key of the previous one, and I always have to manually change the key, and I’m getting annoyed of this, so can you please remove the change key or at least fix it? that would really help!
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Response from developer

Update to version 4.2 for the key transposition fix.

I guess it’s just what I needed

I needed something to… open midi files and listen to them. Kudos to the creator!

Response from developer

Thanks! You’re doing great.

Terrific!

This was a useful app before but the new upgrade is terrific. When our MD sends a midi file now I can select my instrument and mute others, add the rhythm sections, vary the BPM until I’ve got the hand of my part. Congratulations!

Transposed

It would be better if you can add transpose so I can transpose up or down if I need to.

Response from developer

Version 4.1 lets you change tempo and transpose the song’s key. Get it today!

Great App, But One Problem…

This app is great and all of the instruments sound great, except for the bass drum for drums. It’s way to quiet to hear with all of my other instruments and for the type of music I make, which is metal music. If the bass drum can be made a little bit louder, that would be great. It is a great app, overall. Love the tempo change feature, and I love how simple and easy it is to use. Maybe there could be some more SoundBanks added. Anyway, great app, but that bass drum is too quiet. 👍
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Response from developer

Thanks for the feedback. Version 4.0 gives you an equalizer effect that might help you find the sound you want. Also, try some these soundbanks: Airfont, Fury or FluidR3. You can find soundbank links on the MartianRover website, which opens when you tap the Safari button found in the upper left of the app’s Settings screen.

The best for iOS

This is the best app on iOS that can play midi great

The default soundfont isn’t trash
The soundfonts you can add make this app an 5/5 totally recommend
The only thing I have is having to pay for changing bpm ( it annoys me for now but some time in the future I will buy the upgrades )

Really cool

A really good midi app.

Mario 64 soundfonts make everything scuffed

Just wish I could download the midi with a new soundfont.

Other than that, it’s great!

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