Patch Base has the best Roland D-110 editor and librarian available for Mac and iPad. Edit any parameter, organize patches, create random patches, and more.
A D-110 voice (called a Tone) is made up of 4 Partials, in 2 pairs, each with their own "Structure". If that's ever felt confusing, Patch Base clears it up quickly. With the Tone Editor, you can see the structure of your sounds and easily understand what's going on:
Edit and organize the 64 sounds stored in your D-110's memory. Patch Base gives you direct access to the bank, so you can organize voices and back them up to files on your device.