How to replace Excel with a web app

To replace Excel with a web app, you rebuild the spreadsheet's logic as a secure, multi-user web application: a proper database instead of a file, role-based logins instead of shared access, validation and automation instead of manual formulas, and live dashboards instead of copy-paste reports. In the UK a focused Excel-to-web-app build typically costs £3,000-£10,000 and is delivered in a few weeks, with your existing spreadsheet data migrated in. You don't lose anything - the app does everything the sheet did, without the version conflicts, broken formulas and key-person risk.

Why replace Excel at all?

Excel is brilliant for analysis but was never built to run a business process with multiple users. Once several people edit the same file, you get version conflicts, overwritten data, broken formulas, no access control and no audit trail. A web app gives you one source of truth with logins, validation and a full history of who changed what.

What does the web app replace?

Each part of the spreadsheet maps to a feature: tabs become structured records, formulas become validation and automation, the manual report becomes a live dashboard, and emailing the file around becomes role-based access. We can also connect it to other tools you use so data isn't re-keyed.

How much does it cost and how long does it take?

A focused Excel replacement usually starts around £3,000 and is delivered in a few weeks; more complex, multi-user systems run higher. See the full cost guide, or estimate the admin you'd recover with the cost calculator.

How does the migration work?

We start with a discovery sprint to map the spreadsheet's logic, build and test the app alongside it, import your existing data, then switch over - keeping the old sheet as a read-only backup during changeover. This is the practical path covered in our pillar guide on replacing spreadsheets with custom software.