CASE / 04 · 2025

WiseBudget

A mobile app that computes disposable income in real time, for a financial coach running everything on Excel.

Overview
CLIENT
WiseBudget (Belgium)
SECTOR
Financial coaching
SCOPE
iOS · Android · API
DURATION
6 weeks
The challenge

Everything lived in spreadsheets. The follow-up fell apart.

Each client was an Excel sheet, retyped by hand after every meeting. The coach spent more time on data entry than on advice, and no one had a clear, live view of their disposable income.

No way to scale: more clients meant more spreadsheets, more errors, less follow-up. The product was the bottleneck of the business.

Mobile app

The app, screen by screen.

Website

The online storefront.

The crossing

From spreadsheet to mobile app, in three moves.

01 · Model

A single calculation engine

We modelled disposable income as a single calculation, shared between coach and client, updated live.

02 · App

Mobile first

An iOS and Android app the client opens daily, and a tracking dashboard on the coach's side.

03 · Crossing

Data migration

Migration of existing spreadsheets, coach training, go-live with no business interruption.

Results
temps réel
disposable income
zéro
more spreadsheets
6 wks
idea → prod
Client's words
“They didn't ship us a demo, but a product. In six weeks, we went from a stack of spreadsheets to an app my clients open every day. That's the threshold, crossed.”
TC
Thomas Claes
Founder, WiseBudget
What's next

A product stuck on the threshold?

Let's talk →