The Grantophone is a fun yet powerful musical instrument app. The keyboard layout fits the touchscreen very well, giving you a four octave range and allowing you to be very expressive with your performance. There are also many parameters that you can play around with and create all sorts of interesting sounds. You can also layer multiple presets to create some very complex sounds. This version also includes an arpeggiator!

What's New

Version 2.0

Completely new sound synthesis engine
Multiple presets can be played at the same time
You can now edit the waveform, envelopes, LFOs and more for each oscillator.
New arpeggiator lets you specify note and octave for each step in the sequence.

Ratings and Reviews

4.6 out of 5

31 Ratings

31 Ratings



Apps like this were what inspired people to except these devices to be viable musical instruments .We all know it'd be nice to "be on the bus" & what it does't have that would only marginalize its intent .Honestly though I'd forgotten I'd had this .... I noted the update on the desktop and put it on my pad. Simple & inspiring work like this help us all create the multidimensional cacophony we NOW employ .By collectively focusing our intent["wow wouldn't it be cool if I could mix this app with that one!"];simply,we dreamt our dreams awake........I'm sure some will argue ,especially the so called "creators"of".."......
Nevertheless Giuseppe Verdi helped bring The Italian people together in a way that was unprecedented .
What if we KNEW that we could do the same for the American People?

Great work

Erez M.

Im sick of music apps that try to fit everything in on a 9" screen. Oscillating synths and drums and bass and harmony and mic recording.. With the quality of each track diminishing more and more to avoid CPU dysfunction. If you need all that, do it on a laptop or PC like a normal person.

DEVS- Invest time into making apps that do the crap out of one element. Why would I want to bounce a track just to have to deconstruct it all for lengthy remastering on my computer after? You're on a unique path with this app, and you're looking to do this one sound element really well. Good going, man.



Wow, what a cool app! You can really get some great sounds out of this. I dig the simplicity of the interface too. This looks like an early version, so I"m hoping the developer continues to add features over time, particularly those that make it integrate with other apps like DAWs. A really barebones manual or help section would be nice too as I'm not sure I understand every control.

Excellent start! Viva Grantophone!


Grant Kot
6.2 MB
Requires iOS 5.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2013 Grant Kot


  • Family Sharing

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

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