Excel add-in

Your workbook shows the gap. Datama explains why.

Install Datama Compare in Excel and turn any budget vs actual, forecast vs real or YoY comparison into a ranked list of key factors, mix, price, volume and rate effects, in a waterfall your CFO already knows how to read. Change a filter or refresh your data, the waterfall updates instantly.

Get it now Book a demo

Works with your existing ranges and pivot-style data. No ETL, no export to another tool.

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 workbook to insight in three steps

Install the add-in from AppSource

Add Datama Compare from Microsoft AppSource or Excel Home → Add-ins. IT-friendly, no separate data pipeline, no gateway to configure.

Select your KPI range

Point the pane at the range you already use for monthly close: 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 side panel. Change a filter in your sheet, refresh applies.

Demo

See Datama in action in Excel

Run advanced variance analysis directly in the spreadsheets your finance team already owns. Keep your existing data sources, filters and layouts while adding Datama's deterministic driver breakdown, waterfall, tree, table and actionable comments in one workspace.

Guillaume, Founder, Datama

Why teams pick it

Built for controllers, trusted by finance teams

Native to Excel

A real Office add-in in the task pane. Your workbook stays the source of truth, no copy-paste into a BI tool, no parallel model to maintain.

Budget variance, out of the box

Compare actual vs budget, forecast vs real or period over period on the same aggregated range. Ideal for monthly close, management reporting and board packs.

Key factors, ranked

Interest scoring surfaces the segments that actually explain the move, entity, product line, channel, region, so you focus on what matters before the meeting.

Deterministic math

The market equation splits a variation into independent drivers: mix, price, volume and rate effects. Same data, same answer, every time. A platform of trust, not a black box.

Comments your Comex can read

Intelligent comments summarise the waterfall in plain language and stay in sync as you drill or split by dimension. Board-ready output without rebuilding slides by hand.

No data stored

Computation runs on the fly from the range you select. Datama does not warehouse your figures, important when spreadsheets hold sensitive financial data.