Spreadsheet, SaaS or custom app: when a business outgrows its sheets

Almost every company starts with Excel, and that is a good decision. A spreadsheet is cheap, flexible and familiar to the whole team. The trouble comes later: data drifts between files, someone overwrites a colleague's work, and knowledge of "how it works" lives in one person's head. This article helps you judge whether it is time to change, and in which direction.

Signs that spreadsheets are no longer enough

• Several people edit the same data and version conflicts keep appearing.
• Files are named "final_v3_fixed" and nobody knows which one is current.
• Formulas are so complex that everyone is afraid to touch them.
• You need permissions: some people view, others edit, others approve.
• A client or partner should see an order status, but you send it manually.
• Data has to be retyped into another system, which produces errors.

If you recognise three or more, the spreadsheet is probably slowing you down already.

Three paths to choose from

1. Stay with spreadsheets, but tidy up

Sometimes one shared cloud file, agreed naming rules and locked ranges are enough. It is the cheapest option and often sufficient for a small team.

2. An off-the-shelf system (SaaS)

It works when your process is typical: accounting, CRM, ticketing, project management. You pay a subscription, rollout is quick, and product development is the vendor's job. Watch for cost growing with user count, limits on customisation, and whether you can export your data if you switch vendors.

3. A custom web application

It makes sense when the way you work is a competitive advantage or ready-made systems force workarounds. You get a tool fitted to your process, your own permissions, integrations and full control of your data. The price is a higher upfront cost and responsibility for maintenance.

Questions that help you decide

1. Is my process typical for the industry or highly specific?
2. How many people will use the tool in a year and in three years?
3. Which integrations are essential (accounting, shop, email, couriers)?
4. Is the data sensitive and does it need to stay with me?
5. Who will own the tool after launch?
6. What does an hour of manual work cost me today, the one the tool will replace?

Total cost, not just the starting price

When comparing options, count the cost over 3 years: subscriptions or build, maintenance, training, integrations, and team time lost to workarounds. An off-the-shelf system is often cheaper at the start, but as user count grows the maths can flip. A custom app costs more upfront but has no per-seat fee. Whichever wins, it comes from your numbers, not from a rule of thumb.

How to limit risk when building an app

• Start with a narrow scope (MVP) that replaces the most painful spreadsheet.
• Migrate data from existing files instead of starting from scratch.
• Decide who in the company owns the product and approves changes.
• Arrange backups and documentation from day one.

You can read more about how we approach such projects in our web application services.

Summary

A spreadsheet is great for starting out, but it has a ceiling: collaboration, permissions and integrations. When you hit it, consider tidying up, an off-the-shelf SaaS or a custom app, depending on how specific your process is and how many people will use it. Not sure which way to go? Describe your current process in a brief and we will help you weigh the options with no commitment.