I could pull up my new 3901, but there's no way of putting older equipment in as "my equipment". I have a 1994 B7100 and, while I think I can look up the manual, I have to look it up every time.
Plus, I would like to be able to add implements, even non-kubota or LP implements, for nothing other than having the record of it all in one place.
Make it happen Kubota!
Oh, also, being able to record the service done and stuff would be great. Refer to an app called AUTOsist. With that, I can look up exactly how much money I spend on filling my vehicles with gas (fuel), service. I can set reminders for service at certain intervals. A whole lot of other things. Very useful tool.