Bringing a web tax platform to mobile, without losing its logic.

We designed the mobile app for QuickFisco, a platform that helps professionals on Italy’s flat-rate tax regime handle invoicing and filings. The web product already existed; our job was to make it work in a hand.

Project

Name

QuickFisco

Deliverable

UI/UX · iOS and Android

Year

2023

At a glance

Duration

3 months

Screens

~30

The starting point

A live product still being rewritten

The web platform was already released and simultaneously being redesigned by another team. A few alignment calls gave us their direction, and we worked from that, knowing parts of it would keep moving while we designed.

The real problem

The tables were the problem

A desktop page can hold a lot of data at once, and QuickFisco’s did. Invoices, filings, thresholds and totals all shared a screen because there was room for them.

On a phone there isn’t. So rather than shrinking those pages, we broke them into sections, each one carrying a single focus, and decided, for each view, what a professional actually needs to see first when they open it on the move.

Decision

Navigation that behaves like a phone

The web put navigation across the top. We moved it to a bottom bar, not for novelty but for the opposite reason: it’s where every other app on the device puts it, and an app about tax deadlines is not the place to make someone think about where the buttons are.

Design system

Components, in parallel

Colours, typography, buttons, bars: built as reusable components alongside the high-fidelity screens. Thirty screens designed one at a time become thirty separate decisions; built on components, they stay one.

Result

Where it stands

Published on the App Store and Google Play. We reviewed the work with the developers and the platform owners through several calls, and stayed available during development.

Let’s create

great things.

How do you work?

We keep things transparent and collaborative. We share updates consistently throughout the process, so nothing comes as a surprise. Weekly 1-to-1 meetings keep the work aligned and give space to review what's been done and plan what's next.

Why should I choose Heterochromia?

We work fast and we have an opinion. We don't just ask "what do you want?" and execute. We guide you through the process, challenge your assumptions when needed, and help you get to something better than what you imagined. Damn, we love what we do.

Do you do outsourcing?

Over the years, we have met a lot of talented people. Some of them work with us regularly on projects that require specific expertise.

What timezone are you in?

We are based in Milan, Italy (CET/CEST), but we work with clients in the USA and Japan with full flexibility.

Milan, Italy

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You can also mail us at:

© 2026 Heterochromia.

All rights reserved.

Milan, Italy

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You can also mail us at:

© 2026 Heterochromia.

All rights reserved.

.