Chromatic won't work well - you won't even get a full complete octave scale on the pads and it will play havoc will the strum bridge.
It was possible to switch to diatonic scales on the "play" page by setting the key there with options for major and minor. I confess I haven't tried it for a while so it may have changed with updates. I use a workaround of creating presets set with diatonic scales. The same workaround can also allow a modification that will enable playing chromatically but it will not work if you are using the Chorda as a midi controller. (These were worked out for the Orba 2, but they work for the Chorda too.)
We need a way to put specific presets in specific order on the chorda, maybe something in the Artiphon connect tool where you pick one to put in each slot.
Peter Fnord