By Thomas Cohen, founder of Maestro
Replace Excel with an application: choose the right solution and migrate
Should you improve your spreadsheet, adopt business software or build a tool? A decision method and an order-tracking example to prepare your rules, data and migration.
Replacing Excel with an application becomes relevant when work requires shared rules, different permissions and change tracking that are difficult to maintain in your current organisation. The number of tabs is not enough to decide. Start by describing errors and duplicate entry, then compare improving the file with replacing it.
Keep Excel, improve it or replace it?
Keep spreadsheets for one-off analyses, simulations and calculations whose structure you freely change. If someone understands the file, the data is checked and work flows smoothly, rebuilding the tool may create more constraints than benefits.
Improve what exists when the problem mainly stems from habits: copies emailed around, poorly explained columns, inconsistent formats or nobody in charge. A shared source of truth, entry rules and documentation of formulas may be enough. First check the features already available in your working environment.
Consider business software when your needs resemble those of many companies: invoicing, accounting or sales management. Try it on your real cases and check data retrieval. A specialist tool can save you from building and maintaining common features yourself.
No-code deserves a trial if its forms, relationships and automation can cover your needs and someone can administer the solution. Building with AI or commissioning custom development becomes an option when your particular rules justify it. Then compare maintenance, connections and access permissions as carefully as the first screens. No choice removes the work of defining and checking requirements.
Fictional example: an order-tracking workbook
Imagine a small business tracking orders in a workbook. Sales staff add requests, a manager approves certain discounts and the workshop prepares shipments. The observed problem: an order can be prepared before approval, and nobody knows which version of the amount is authoritative.
The first application could be limited to four states: draft, awaiting approval, approved and shipped. The salesperson creates and corrects the draft. The manager approves the discount. The workshop views approved orders and records shipment. Invoicing stays in the existing software; the analysis spreadsheet can remain in Excel through an export.
This breakdown avoids reproducing every tab as a screen. It describes useful work and responsibilities. Before building, check with users whether customer returns, cancellations and urgent orders belong in this initial scope or can wait.
Extract the rules hidden in the workbook
For each column, record its meaning, allowed values, whether it is mandatory and who fills it in. For each formula, write an example of the expected result. A coloured cell can carry a decision as important as a calculation: ask what colours, comments and manual corrections mean.
In our fictional example, a discount above 10% requires the manager's approval. A shipped order cannot go straight back to draft. These rules must be written, discussed and tested. Your file helps prepare the requirements document, but it does not explain decisions made on the phone or from memory.
Define data and permissions
Separate customers, orders and order lines with stable identifiers. Plan how to handle duplicates, missing fields and date formats. Decide who can view customer details, change prices and export the full list. Test restrictions using separate accounts: hiding a button does not prove an action is forbidden.
For the first tests, use a copy containing fictional data. In Maestro, projects are kept on your machine, but assistants can receive the context needed for their work. Storage for the application you create depends on its architecture. Read the detailed data flows before sharing a file containing confidential information.
Migrate gradually and keep a way back
Keep an untouched backup of the workbook and prepare an initial import using a representative sample. Compare orders, totals and exceptional cases with the source. Then have users complete a full cycle, from entry to shipment. Our Excel data migration guide explains this preparation.
Set the switchover date and the authoritative source for each stage. If you compare both tools in parallel, avoid independent changes that cannot be reconciled. Define the errors that would require a return to the workbook and how changes made since the copy will be recovered. The old file can then remain available as read-only.
The first result to request
Start with the most frequent problem and a verifiable journey. In our example: no unapproved order should appear in the preparation list. This precise result lets you judge a demonstration and obtain a development estimate grounded in scope rather than a vague promise to replace Excel.