Spreadsheets · Lumen Sheets

A real spreadsheet, supercharged by AI.

The full grid you expect — formulas, charts, formatting — then ask AI to clean, transform, summarize or explain your data on command. Open and save real Excel files.

Q3-data.xlsx
Everything in the spreadsheet

The grid you know, with AI built in.

Powerful enough for real analysis, friendly enough that AI does the tedious parts.

Full formula engine

Functions, cell references, ranges and nested formulas — recalculated live.

Charts

Turn ranges into bar, line and pie charts that update with your data.

Formatting & styles

Number formats, colors, borders, merged cells, frozen headers.

Conditional highlights

Rules that color cells by value so the important numbers jump out.

Sort, filter & find

Slice big tables fast and jump straight to the rows that matter.

Excel & CSV in/out

Open and save .xlsx, .xlsm, .csv and .tsv with formulas intact.

AI: clean messy data

Fix dates, split columns, dedupe and normalize with one prompt.

AI: summarize & explain

Ask what the numbers mean and get a plain-English answer + a chart.

AI: write formulas

Describe what you want; AI writes (and explains) the formula.

Build a widget

Turn a sheet into a shareable, interactive mini-app — authored by AI.

Multi-sheet workbooks

Organize related tables across tabs in a single file.

Stays on your device

Your data is a local file — no cloud upload required to work on it.

AI in the spreadsheet

Stop wrangling rows. Just ask.

"Clean this export, group by region, and chart monthly totals." The AI understands the whole sheet — its columns, types and values — and does it, then shows its work so you stay in control.

More surfaces

One app, every format.

7 in 1
Editors in a single app
300
Free AI credits / month
100%
Your files, stored locally
$0
Subscription, ever
FAQ

Spreadsheet questions, answered.

Does it open my Excel files?

Yes — import and export .xlsx, .xlsm, CSV and TSV, so it fits straight into your existing workflow.

What can the AI do with my data?

Clean messy data, fill columns, summarize, explain the numbers, and build charts — all on command.

Are formulas and charts supported?

Yes — a full formula engine with formatting, conditional highlights and charts.

Can I share a sheet without sending the file?

Yes — turn any sheet into a shareable mini-app widget.

Download

Make your data talk.

Free to download, free to use. AI when you want it.