There is a Summary App for everyone.

Summary App

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Display summary from a column in a view
If you want to quickly summarize any record - whether the total tasks completed, total amount of deals closed last quarter, total campaigns that are currently in progress and more, this app is for you. The Summary app built by Stackby is the fastest way to summarize any column information from a view or a table. Visualize any useful information that keeps your teams moving. You can get a count on the number of rows in a view or even add a summary function - Sum, Average, Rows filled etc. of a particular column in a view.