Fieldbook has some memory and general slowness problems with 30MB of data, as I currently have there.
Would this be faster and more flexible? It seems to be using Handsontable for the spreadsheet component. It seems heavy, but I guess the computations, views and queries is where things get complicated.
Interestingly, we (Fieldbook) used handsontable for a long time, but eventually found it wasn't performant enough for the size of data we had (also we just needed to be able to do more customization than we could wrangle out of it)