Desktop app

The full Excel diff engine, 100% offline

For workbooks that must never touch a cloud. AST-level formulas, VBA, .xlsb/.xls, charts, and pivots — compared on your machine, with no account and no upload.

Buy now — $149 View docs

One-time perpetual license + optional ~$49/yr maintenance for updates. Windows, macOS & Linux.

budget_2025.xlsx → budget_2026.xlsx
Assumptions!B12 changed =Growth*0.08 → =Growth*0.09
Headcount!A14 added row New hire — Q2 backfill
Summary!D7 removed =SUM(D2:D6)
modPricing.bas VBA changed ApplyDiscount() — flat 10% → DiscountRate

Example of the desktop comparison view — formulas, structure, and VBA in one place.

Made for work that can’t leave the room

The desktop app exists for one reason: some workbooks can’t be uploaded anywhere, full stop. It runs the complete SheetDelta engine on your own machine, so you get the deepest possible comparison without trusting a server with anything.

  • Actuaries and model validators on regulated workbooks
  • Bank, PE, and infrastructure analysts on deal models
  • Consultants comparing versions on a client’s locked-down laptop
  • Anyone whose workbooks legally cannot touch a cloud service

The complete engine

AST-level formula comparison

Compares formula logic, not text. A reference that moved or a rewritten-but-equivalent formula shows up correctly.

VBA & macro comparison

Module-level comparison of macro code, so a changed routine is obvious instead of buried.

Every Excel format

Full support for .xlsx, .xlsm, .xlsb, .xls, .xltx, .xltm, and .xlam — including legacy and binary workbooks.

Charts, pivots & structure

Detects inserted and deleted rows and columns, and changes to charts, pivot tables, named ranges, and styles.

Audit-trail export

Export a clean, shareable record of every change for your files, reviewers, or auditors.

CLI, MCP & AI agents

Ships with the sheetdelta CLI and an MCP server, and registers with Claude Desktop and Cursor in one click — so your AI agent can diff and read workbooks.

100% offline

No internet connection, no account, no telemetry on your files. They never leave your machine — not even temporarily.

Own it. Don’t rent it.

One payment of $149 gives you a perpetual license — the app is yours and keeps working. Optional maintenance of about $49/year keeps you current with new Excel formats and engine improvements. Skip a year and nothing breaks; you just pause updates.

Built in

One-click access for your AI agent

The desktop app bundles the sheetdelta command-line tool and an MCP server. Turn on AI agent access in settings and it registers SheetDelta with every agent client you have installed — Claude Desktop and Cursor today — so your assistant can diff and read workbooks without you editing a config file. It adds only its own entry and leaves the rest of your setup alone.

The same offline guarantee holds: the agent reads your files locally and nothing is uploaded. See how SheetDelta works with AI agents →

Frequently asked questions

Is it a one-time purchase?
Yes. $149 buys a perpetual license — the app keeps working forever, with no subscription. Optional maintenance (~$49/year) keeps you on the latest version with new formats and engine improvements. Let it lapse and your installed version still runs; you simply stop getting updates.
Which operating systems are supported?
Windows, macOS, and Linux. Unlike most Excel-comparison utilities, SheetDelta Desktop isn’t Windows-only and doesn’t require Excel or Office to be installed — it reads the files directly.
Do my files get uploaded or phoned home?
No. All comparison happens locally. The app contacts our license server only to validate your key — your workbook contents are never part of that, and there’s no usage telemetry on file data.
Why buy this instead of a team seat?
The desktop app is for people who never want their files near a cloud, and who’d rather own a tool than subscribe. If you want shared history, comments, and sign-off across a team, the hosted platform is the better fit.
Can my AI agent use the desktop app?
Yes. The app bundles the sheetdelta CLI and an MCP server, and can register them with Claude Desktop and Cursor in one click. Your agent then diffs and reads workbooks locally — nothing uploaded. See SheetDelta for AI agents.
How is it different from older desktop tools?
Most Excel-comparison utilities are Windows-only, require Excel, and stop at cell values. SheetDelta is cross-platform, reads files directly, and understands formulas as logic and VBA as code. See the DiffEngineX and xlCompare comparisons.

Compare any two workbooks, on your own machine

The deepest comparison SheetDelta offers, with nothing uploaded anywhere.

Buy now — $149 Read the docs