Cute and fun! The toe-tapping banana is a nice touch. A minor suggestion for your export format is to switch from an "array of structs" to a "struct of arrays"

Cute and fun! The toe-tapping banana is a nice touch. A minor suggestion for your export format is to switch from an "array of structs" to a "struct of arrays" layout: For example, change this: "steps": [{"isOn":true, "repeat":"1:2"}, {"isOn":false}, {"isOn":false}, {"isOn":false}, ...] To this: "steps": {"repeat": ["1:2",null,null,null,...], "isOn":[true,false,false,false,...]} It's not necessarily more compact, but you can iterate over all of the collections with a single index.