Featuring an FM tone generator, FM Essential is a synthesizer app for the iPhone and iPad that provides for real-time synth performances and also lets you edit voices.

-FM sound
・Tone Generator: FM
・Part: 1
・Polyphony: 16
・Preset Voice: 271
・Arpeggiator patterns: 64
・Chord pads: 20
・Scales: 25

-Drum Part
Tone Generator: Audio
Part: 1
Drum Pad: 16
Drum Pad Set: 3

Plug into MX!
-You can play full 271 voices and voice store function if you connect your iOS with Yamaha music synthesizer MX BK/BU series.

Effects/EQ edit
-You can adjust parameters to edit effects and equalization.

Ball controller
-Touch and drag in ball controller to modulate the sound by simultaneously changing multiple parameters based on the ball position.

Step sequencer
-We can store the ball position in the currently selected scene box.
Arpeggiator and chord pads
-You can play Arpeggiator and Chord pads in addition to keyboard with various scales.

What's MX BK/BU/WH series? Find more here:

-Compatible with Audio Bus、Audio Unit Extentions

-Compatible devices:
iPhone 5S, 6/6 plus, 6s/6s plus and SE, iPod touch 6th Generation or later, iPad Air 1st Generation or later, iPad mini 2nd Generation or later,iPad Pro

What's New

Version 1.1.2

- Minor Bug Fix
- Support for MX88 BK activation

Ratings and Reviews

3.1 out of 5
22 Ratings
22 Ratings

Uh, No


First off, the app in its unlocked state is pretty interesting in its own right, particularly if you've owned a DX7 or similar synth. The supplied patches are 'meh', but will whet your appetite.

The kink comes when you try what's described in the above review. The keyboard specialist at the retailer I visited knew all about the app, but pitched it as something that was slaved to a particular keyboard. Yours. You buy an MX## and you can use the supplied cable to interface with your iOS device and unlock the 250+ additional voices. When I asked him if he could unlock it with a display synth he said no, it wouldn't work apart from that keyboard.

Not to say the app's not cool, just that it's a fail as described above. Likewise not to say I wouldn't get an MX88 later and use this - I own and enjoy lots of YamaStuff.

Thank you, Yamaha


FM GO Promo
Want the the full version? Here's your chance. First, Download the free version of FM Essential to your iOS device, then visit an authorized Yamaha dealer and connect your iOS device to a Yamaha MX synthesizer to unlock the full version.

There is no purchase required to download FM Essential. Once the full version is downloaded and unlocked, it stays fully enabled on your device – even when the MX is no longer connected! That's right, you can walk out of the store with the full version loaded on your iOS device. But you might want to stay and have some fun playing with the MX and FM Essential!

Update: Take your Apple Camera kit adapter and ask the store to lend you a USB to connect and you will be set! Then have a blast playing the instrument using the phone/keyboard combo on the fly. The sales guy didn't know about the app or the offer, but we both were excited and surprised with the possibilities offered using the app/keyboard combo.

I do not work for Yamaha. But, they should have someone go to stores...

I have an MX49 and it doesn’t unlock on iPhone X!!

Jean J. Labrosse

I agree with the folks that are annoyed that you require an MX to unlock this app.

I have an MX49BK and I can’t get it to unlock the app on iPhoneX!

It unlocks on my iPad Pro 9.7” but after a while it tells me that the iPad hardware is not compatible when connected to the MX. So I can use the iPad standalone with all the features but it’s nice to be able to select voices and features directly from the iPad and play them on the MX.

Either charge something to unlock the full version or just unlock it regardless of whether you own an MX or not.

I also own a Montage 7 (FANTASTIC! by the way) and got the MX to take with me when I travel.


Yamaha Corporation of America
108.4 MB
Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.
English, Japanese
Age Rating
Rated 4+
© 2016 Yamaha Corporation


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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