To be honest this is very disappointing. I was expecting much more for 20 bucks. You can only edit custom cards that you create not what is already provided with this app.
Cards that are already made/included in the app, even if the information is wrong or missing, can not be deleted,edited or added to. So basically you have to create your own new category or set of cards!
Also, lacking in lights and switches diagrams. This app does not cover the whole overhead panel, Or pedestal.
This is very very basic and I will only change my rating if they fix what I had mentioned. i.e. Lights and switches questions and the option of editing any card you like. Not just custom set. As is, this app is not worth 20 bucks that's for sure. I've owned this app now for over a year and not one software update has been provided.