Almost every company has a spreadsheet like this. It started innocently: someone made a table for production planning, commission settlements or order tracking. Years passed. Today that spreadsheet has dozens of tabs, formulas nobody understands, and the status of the most important "system" in the company. The whole organisation knows too much hangs on it. And everyone pretends not to see.
A spreadsheet is an excellent tool for analysis, prototypes and one person's work. The problem starts when it becomes the foundation of a process many people work in and money depends on.
Warning signs that the spreadsheet has stopped being enough
Versions circulate by email
"Plan_2026_v7_final_CORRECTED_fin.xlsx". If several versions of the same file are circulating around the company and nobody is sure which one is current, decisions are being made on data that may be a week out of date. Multiple people working on one file ends in overwriting each other's changes or a queue: "don't touch it, I'm editing now".
One person "knows how it works"
The spreadsheet has its guardian: the person who knows all the formulas, the exceptions and the "you have to fix this bit by hand". When they're on holiday, the process slows down. If they left, the process would stop. That's not the company's knowledge, it's one person's knowledge, stored in their head and in undocumented formulas.
Formula errors cost real money
A formula dragged one row off, a hidden column, a manually overwritten cell in the middle of the calculations. Mistakes like these can understate a price in a quote, inflate a commission or distort a project's profitability. Worse, the spreadsheet won't tell you something is wrong: it will keep showing numbers with full confidence. The errors only surface when they hurt.
No audit trail and no control
Who changed this value? When? Why? The spreadsheet usually won't answer. With financial, personal or commercial data, the lack of change history and access control is a business and regulatory risk, not a mere inconvenience.
Why the classic approach fails
Most companies know perfectly well they should replace a critical spreadsheet with a proper tool. Why don't they? Because the options so far have been unattractive. Off-the-shelf systems often turn out too big and too rigid: the company adapts its process to the program instead of the other way round. Ordering a bespoke application in the classic model, meanwhile, meant long months of work and a budget next to which the spreadsheet, for all its flaws, looked like a reasonable compromise.
For years that calculation genuinely came out in Excel's favour. Which is why so many companies still hang on it.
What it looks like with AI
Artificial intelligence has moved the break-even point. At ESKOM AI we build software in a process assisted by a team of specialised AI agents. Under the supervision of experienced people, the agents do a large share of the work: from analysing the logic hidden in the spreadsheet, through successive versions of the application, to documentation and tests. In practice:
- A light application instead of an all-in-one machine. We recreate exactly your process, with its rules and exceptions, instead of squeezing the company into someone else's template. What used to be one person's knowledge in the spreadsheet becomes the company's documented logic.
- Weeks, not quarters. You see the first working version quickly and use it to decide the direction. We migrate the spreadsheet's data as part of the project.
- Quality built into the process. Every version goes through a full battery of tests: unit, integration, E2E, UI, security and performance. Where the spreadsheet stayed silent, the application enforces the rules: it validates incoming data, keeps a change history, controls who can do what.
What this means for your company
When does moving from a spreadsheet to an application start to pay off? A simple test: if more than a few people work in the spreadsheet regularly, and an error in it could cost more than a few thousand zlotys, do the maths. Add up the hours spent every month merging versions, fixing data and "minding the spreadsheet", plus the cost of last year's mistakes. At many companies that sum alone exceeds the cost of building a light application.
Indicative ranges with the AI-assisted approach:
- Time: the first working version typically in a few weeks; full rollout with data migration usually within one to two months, depending on the complexity of the process.
- Cost: replacing a single spreadsheet-based process with a light application usually starts at several tens of thousands of zlotys. That investment often pays for itself in the first year through time savings and avoided errors alone.
The exact budget depends on scope and we give it after a free consultation, before you decide anything.
FAQ
Will we have to give up Excel entirely? No. Spreadsheets stay where they are best: in ad hoc analysis. The application takes over what the spreadsheet fails at, meaning many people working together, enforcing the rules and data security. Export to a spreadsheet is a standard feature.
Our spreadsheet has years of accretions and nobody knows all the formulas. Is that a problem? That's the typical starting point. Analysing the existing spreadsheet (untangling the formulas, rules and exceptions) is part of the project. Sometimes it's only then that the company sees in black and white, for the first time, how its process really works.
What about the person who "runs" the spreadsheet today — do they lose their role? Quite the opposite: they're usually the most valuable person on the project, because they know the process inside out. After the rollout they stop being the full-time "formula firefighter", and their knowledge works inside a tool available to the whole company.
Check what your spreadsheet is costing you
If a specific file at your company came to mind while reading this, it's a sign it's time to count. Book a free consultation via the form at eskom.ai/pl/kontakt. We'll review your process, estimate the cost of the status quo and show what a light application could look like in its place: concretely, with time and budget ranges.