Official Google Workspace add-on
Your Google Sheet shows the gap. Datama explains why.
Datama Compare is an official Google Workspace extension. Turn any budget vs actual, forecast vs real or YoY comparison into a ranked waterfall, mix, price, volume and rate effects, without leaving your sheet. Edit a cell or filter: the analysis follows instantly, right in your spreadsheet.
Free to install. Full-feature trial for 7 days, no credit card. Your data never leaves Google Sheets.
Waterfall
What's driving my variation?
Tailored solutions across industries:
Sales & Retail
Instantly see how pricing and product mix adjustments impact revenue.
Web Analytics
Effortlessly track key changes in your online conversion funnel.
Media & Acquisition
Understand the effectiveness of your campaigns at a glance.
Finance
Quickly identify factors affecting revenue and financial performance.
How it works
From your sheet to insight in three steps
Install the add-on from Google Workspace
Add Datama Compare from the Google Workspace Marketplace (Extensions → Add-ons). IT-friendly for Workspace admins, no separate pipeline to stand up.
Select the range you already use
Point the side panel at your monthly close or forecast range: main KPI, comparison dimension (budget vs actual, N vs N-1), steps and explanation dimensions.
Read the waterfall: and the story behind it
Datama computes the decomposition and renders the waterfall, smart comment and ranked drivers in the panel. Edit a cell or filter: refresh applies without leaving your sheet.
Demo
See Datama in action in Google Sheets
Run advanced variance analysis directly in the Google Sheets your finance and controlling teams already share. Keep your existing data sources and filters while adding Datama's deterministic driver breakdown, waterfall, tree, table and actionable comments without quitting your usual environment.
Guillaume, Founder, Datama
Why teams pick it
Built for controllers who live in Sheets
Native to Google Sheets
A real Workspace add-on in the side panel. Your shared workbook stays the source of truth, no copy-paste into a BI tool, no parallel model to maintain.
Live scenario modeling
Change a figure, a filter or a segment in your sheet and watch the waterfall update instantly, spreadsheet-native, with driver analysis built in. Stress-test budget assumptions before the close meeting.
Official Google Workspace extension
Datama Compare is listed on the Google Workspace Marketplace, the same trusted channel your IT team already uses for Sheets add-ons. Install from Extensions → Add-ons in one click.
Free to install, 7-day full trial
Get started at no cost. Activate a 7-day trial of the full version with no credit card and no commitment, enough time to run your first budget variance on real data.
Built for shared workbooks
Anyone with access to the sheet can run the same analysis. Install once at Workspace level and democratize gap analysis across finance, FP&A and business partners.
Google-native security
Your financial data stays inside Google Sheets. Nothing is exported to a third-party warehouse, computation runs on the range you select, within your Workspace environment.
Datama allows us to easily and reliably explain our performance against budget, by displaying only the most significant contributing factors.
Charles Brault
Insights & Analytics Director, TheFork
Trusted by data teams at
Put variance analysis inside your Google Sheets
Install from the Marketplace in minutes: free, with a 7-day full trial and no credit card required.