Hi Jim, this is looking interesting. Might sharing it as a template for the rest of us to build on?
Sorry haven’t had time to work on this during the week. Just getting around to adding the cost by year record collection.
@Elias_Gomez_Sainz
I have created a new table called cost and want to keep a running record by year. I have strated today and will continue to model mine after your idea a few posts up. This is a work in progress and I will post progress during the weekend.

@Wayne_Chen
I’m open to sharing and seeing if we can improve this base through colloboration. What’s the best way to share the base?

Hi
I too use the mobile version (unfortunately you have limited field options with the mobile version i.e. no Rollups or Lookups) on my iPad and I also downloaded the desktop version on my MacBook (there is a Windows version too). I don’t know if Jim_Bean was wondering if he could do Rollups, Lookups and Linking tables/records, you could, I did, on the desktop version or maybe I didn’t understand, which is quite possible.
I did a quick screenshot of the available field options in the mobile version of Airtable. You might know this already and it might also be helpful to other Airtable users, too.


It seems that you can do linking (create and edit) in the mobile version, I just remembered. I am including another screenshot with the Linking options on an iPad.

I hope this helps.
Thank you.
MK
I too would be interested on working on this as a base. Is there a way?
Thank you