Ok, I think I'm pretty late to the party.
I used to use thumbjam all the time on my iPhone many years ago. I had written it off as I have been using android on various devices for the last 5 years.
Today I managed to download the APK to have it back on my phone again but only have minimal functionality. I can't find a way to upgrade to the full version without it crashing the app.
I am using a Google pixel 1.
I just want to play theremin, lay down some beats and record some idiots.
Please help.
I will trade money for theremin.
Thanks
Jack