You're one step away frombetter formula work.
Choose your platform below. Install takes about 2 minutes — your 14-day trial starts automatically.
- Free 14-day trial
- No credit card
- Days count only when you use it
Pick your platform
Workspace add-on
Google Sheets
Turn Google Sheets into a maintainable formula environment.
- Multi-line editor with @@variables
- Excel-to-Sheets translator built in
- Snippets sync across your team
Opens Google Workspace Marketplace
Excel for the Web add-in
Microsoft Excel
Reuse logic across workbooks — without rebuilding the same formulas.
- Multi-line editor with @@variables
- Works in Excel for the Web
- Same library, both surfaces
Opens Microsoft Marketplace
From click to first formula in 2 minutes
- 01
Install from the marketplace
One click on the install button, then accept the marketplace permissions. We never ask for broad Drive or workbook scope — only the spreadsheet you have open.
- 02
Open Formula Foundry in any sheet
Find it under Extensions → Formula Foundry on Sheets, or in the Home → Add-ins ribbon on Excel. The editor opens in the sidebar, your data stays in your sheet.
- 03
Your trial starts on the first active day
Open it Tuesday, skip Wednesday, open it Thursday — that's two trial days, not three. Use full Pro features for 14 active days, no credit card.
“The variable syntax is brilliant. Changing a tax rate from 0.08 to 0.10 instantly updated 500+ formulas. Makes spreadsheets maintainable and formulas self-documenting. Perfect for financial modeling.”
Namrit ShethData AnalystYour data never leaves your spreadsheet
Formula Foundry runs entirely inside your Sheets or Excel session. We never request broad Drive or global workbook scope. Variables you define are stored in a hidden sheet inside your own file — not on our servers.
Quick questions
Before you install
- No. Install the add-on, open it in any spreadsheet, and the 14-day Pro trial starts automatically. You'll only see a billing page if you decide to keep using it after the trial.
- Trial days only tick down on days you actually open Formula Foundry. Open it twice a week, and your 14-day trial lasts seven weeks. We don't punish you for not having time today.
- On Google Sheets, only the spreadsheet you currently have open — never broad Drive or global workbook scope. On Excel for the Web, only the active workbook. We never read other files.
- Yes. Your account, snippets, and variables sync across both surfaces. Install whichever you use most today; add the other later for free.
Pick a platform.
Start writing better formulas.
No credit card. Active-day trial. Cancel anytime — but most analysts don't.
Already installed? Open Formula Foundry in your spreadsheet to sign in.