Kayo.
Kayo — Creation · Web & mobile applications

A tool that fits the way you work, not the other way round.

A spreadsheet that has outgrown itself, off-the-shelf software that does too much or too little, a task three people redo every week: that is often where a custom application makes sense. Kayo designs and builds web and mobile tools for your team or your customers, based on how you actually work.

Indicative timeline
4 to 12 weeks depending on scope
Price
From €4,500
What happens today

The tool you need does not exist. So you improvise.

It is not an organisational flaw. Off-the-shelf software is made for everyone, and therefore for no one in particular.

How it works

Understand the flow, prototype, deliver in stages.

An application is built from what you already do. It goes into service in usable pieces, not as one block at the end.

Step 01

The existing workflow

We observe how the work is done today: who enters what, when, with which tool. From that we derive the screens needed and what the application must do, no more, no less.

Step 02

The clickable prototype

Before a single line of code, you handle an interactive mockup of the main screens. That is where back-and-forth costs the least.

Step 03

Development in increments

The application is delivered in successive versions, each usable. You test it with real data, we fix, then we move to the next increment.

What changes

Before and after: what actually changes.

Your team keeps its useful habits. It loses the retyping.

SituationTodayWith Kayo
Data entryThe same information typed into several toolsEntered once, available wherever it is useful
Tracking a caseIn the head of the person handling itA status, an owner, a next step visible to the team
Access from the fieldA file to open on the office computerAn application usable on a phone, on the move
CustomersCall to find out where their request standsCheck their portal, receive the useful notifications
EvolutionA spreadsheet nobody dares touchFeatures added increment after increment, without breaking everything
You stay in control

What stays in your hands.

An application touches the core of your organisation. You decide what it does and who has access.

Tools involved

Proven tools, chosen to last.

The technical base is widespread and documented. Another team could take it over without starting from scratch.

  • Next.js·web application
  • React Native or PWA·mobile version
  • Supabase or PostgreSQL·database
  • Vercel·hosting
  • Stripe·payment, if needed
  • Figma·clickable prototype
« A good tool stands out because nobody notices it. It does what the team was already doing, better. »
Design principle
Illustrative example

A cleaning company that schedules its teams on a shared spreadsheet.

Fictional example to show the process. Timelines are those of a typical project and vary with scope.

  1. Week 1

    Observation

    Three people fill in the same schedule. Replacements are arranged by text message and never recorded. Customers call to confirm the visit.

  2. Weeks 2 and 3

    Prototype

    A three-screen prototype: the week's schedule, the job sheet on a phone, the customer portal with the date of the next visit. Two test sessions with the team leaders.

  3. Weeks 4 to 9

    First increment

    The schedule and the job sheet are developed, tested for a week alongside the spreadsheet, then adopted. The spreadsheet is set to read-only.

  4. Weeks 10 to 12

    Second increment

    The customer portal goes live. Customers see their upcoming visits and receive a confirmation the day before. Confirmation calls to the front desk drop.

Illustrative scenario: scope, timelines and features are examples. They are defined with you, based on your workflow. An illustration is not a promise of results.

Frequently asked questions

Before you ask.

Web application or mobile application?

It depends on who uses it and where. A web application works on every device with no installation; an installed app is justified for intensive use in the field. We advise the right format, and the two often combine.

How long before I can use it?

The first usable increment generally arrives after four to six weeks, depending on scope. The rest follows in stages, while you already use the first version.

What if my needs change along the way?

That is expected. Delivering in increments makes it possible to redirect the next one. Anything outside the initial quote is priced before being started.

Can it connect to my current tools?

In most cases, yes: invoicing, calendar, email, quoting tool. We check what each tool allows before committing.

Next step

Describe your project and we will reply with a clear proposal.

A few lines are enough: your business, what you expect from the project, your timeline. No need to have everything figured out.