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The Foundry Blog

Sharper formulas. Cleaner sheets.

Insights, tutorials, and updates from the team building the future of spreadsheet development.

A monitor displaying cascading data structures to illustrate how to use array formulas in google sheets.
13 min read

Real Solutions for Scaling Data: How to Use Array Formulas in Google Sheets

Learn how to replace thousands of repetitive cell calculations with a single master formula, preventing manual errors and scaling your data workflows effortlessly.

A secure approach to generating spreadsheet formulas using automation tools without exposing data.
19 min read

Stop Hand-Coding: Why the Best Free AI for Excel Formulas Protects Your Private Data

Discover why pasting your raw spreadsheet data into web bots is a massive security risk, and learn how to use syntax generators safely to write complex spreadsheet logic without exposing your numbers.