You can do some basic math within the app by creating a Match column in the data tab. If you are doing something more complex in your sheet, then there will be a delay between when the data is submitted, calculated in the sheet, and then returned to Glide. I haven’t been able to think of a good way to hide a value temporarily. Here is a thread where we tried to come up with a solution to a similar problem. Right now you can’t compare to column values to see if they match or not. You could create a column value in your sheet with the current date/time. Then when it updates to Glide you can display the date/time as a “Current As Of:” value. If I think of a solution, I’ll let you know.