iPhone with EnergyXT2 by mossontherock

According to the author, "The so named Silver Synth layout below was derived from my iPad's larger layout and sectioned into pages. It was designed using a software DAW and soundfonts. I used EnergyXT2 as the host and a number of other VST midi tools with S-Poly-Limiter VST being key to switching voices off and on. All the required parameters have a midi learn function so finding an exact CC number was not important - it just had to be unique and not interfere with any other CC."