Blog
2026-02-15· 4 min

Why your spreadsheet should be a web app

Your business runs on a Google Sheet. It started simple — a few columns, a few rows. Now it has 15 tabs, 3 people editing it simultaneously, and nobody knows which version is correct. Sound familiar?

Signs your spreadsheet needs to become an app

You know it's time when: someone accidentally deletes a formula and nobody notices for a week. New employees need 3 days of training just to understand the sheet. You have a 'DO NOT TOUCH' tab. Your manager asks 'is this data current?' every time they open it.

What a web app gives you that a spreadsheet can't

Permissions — not everyone can edit everything. Validation — no more wrong data types in cells. History — see who changed what and when. Dashboards — visual overview instead of scrolling through rows. Mobile access — works properly on phones. API — connect to other systems automatically.

It's not as big a project as you think

We're not talking about building SAP. We take your existing spreadsheet logic and turn it into a simple web tool. Same calculations, same workflow — just properly built. Most projects take 2-4 weeks and cost €2,000-€5,000. Compare that to one month of mistakes from a broken formula.

Your data, your rules

The app runs on your server or a cloud you choose. You own the data. You own the code. No vendor lock-in. If you want to switch developers later, everything is yours. That's how it should be.

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Spreadsheet To Web App – Codeliner Blog | Codeliner