Quillo | Zentra

What we did

Product design

Web app

AI UX

Client

Self-initiated

Year

2026

Platform

Marketing site, web app

Bookkeeping that does itself, for freelancers. We designed the marketing site and a web app that sorts your spending, chases invoices and keeps a running tax estimate.

The challenge

Freelancers don't want to do bookkeeping. They want two numbers: what they can safely spend, and what they'll owe in tax. Most tools make them categorise hundreds of transactions to find out.

The approach

Quillo does the sorting and asks only when it isn't sure. We designed every AI suggestion to show its reasoning and be undone in one click, so people trust the numbers it produces.

Scroll to explore the full page

Full page, top to bottom

Marketing site

Editorial, not accounting software

The site borrows from magazines rather than finance apps: a big serif headline, the two numbers that matter shown straight away, and a bento of features written in plain English. It sells calm, which is what freelancers are really buying.

User flow

A finished job, not an empty dashboard

The flow is designed so the first thing a new user sees is work already done: 142 transactions sorted and six questions. Everything else branches from the review queue.

Plain English, no ledgers

The site

Two numbers on the homepage

The homepage leads with the two numbers freelancers actually want: what's safe to spend, and what to put aside for tax. The rest of the page explains how Quillo works them out.

Onboarding

Connected in two minutes

Onboarding asks a few questions, connects the bank through Open Banking and sorts the last 90 days while you watch. The first thing you see is a finished job, not an empty dashboard.

Dashboard

Safe to spend, at a glance

The dashboard leads with the two numbers people check most. Money in and out, overdue invoices and the next tax date sit below, in order of how often you need them.

Asks only when unsure

AI you can check

Every suggestion shows its working

Quillo asks only when it isn't sure, and every suggestion says why: "You've filed Adobe as software 11 times." Accepting teaches it; changing one fixes every similar transaction.

The details

The small jobs, done for you

Receipts match themselves to transactions, the tax estimate shows exactly how it was worked out, and a monthly email sums up the month in thirty seconds. Every tax figure is labelled an estimate, never advice.

Invoices

Chasing, without the awkward email

Invoices take a minute to make and chase themselves: a friendly reminder at 3 days late and a firmer one at 14, each previewed before it goes.

All screens

Calm, from end to end

Fourteen screens share the same paper background, serif numbers and green accent, so even the tax pages feel unhurried.

Design system

Editorial, on purpose

A high-contrast serif for money and headlines, a plain sans for everything else, and a lime highlighter used only for the number that matters most on each screen.

In context

Fits into a freelancer's day

Quillo is used in short bursts: a receipt snapped at a café, a quick check of the dashboard between client calls.

Of transactions sorted while you finish onboarding

90 days

To accept or undo any AI suggestion

1 click

Safe to spend and set aside for tax, always shown first

2 numbers

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