Patch Base has the best Yamaha DX100 editor and librarian available for Mac and iPad. Edit any parameter, organize patches, create random patches, and more.
Patch Base makes FM easy to work with by showing you the layout of the currently selected algorithm and the envelopes and settings of each operator. You can finally visualize what's going on inside of the DX100, and once you do, it's not that complicated. Everything is shown on a single screen, including the LFO and external control settings.
Patch Base's Bank Editor let you change and organize the saved sounds on your Yamaha DX100. You can easily save a bank to a file for back up and storage, and import entire new banks in seconds.