The vehicle tax saving app
Working with two dedicated teams, to develop the leading drivers tax saving app in the DACH region. As the designer, my core task was to define the app's purpose: to be brand-aligned, genuinely helpful for users, and a market differentiator for Vimcar. I worked with engineers to build this vision. I'm incredibly proud of what we achieved.
Client
Vimcar / Shiftmove
Date
2024-2025
CATEGORY
Telematics
Automotive
Scope of work
iOS app
Android app
Webapp
Objective
Design and develop a user-centric Logbook app tailored for tax-compliant trip management.
Purpose
Deliver a thoughtful, research-driven experience that empowers users to easily categorize trips, automate tasks, and ensure legal compliance—ultimately saving time and reducing tax burdens.
Outcome
Shaped over the course of a year, the Logbook app was built through iterative sprints, extensive user research, and usability testing. Core functionalities were released early and refined based on continuous feedback. A standout achievement was the seamless quick trip categorization feature, designed to help users efficiently mark business trips for tax benefits. Legacy features were carefully reviewed and retired where necessary to streamline the user journey.
Standout Feature
One valuable feature for our users is the quick categorization of trips, helping them save on taxes by easily marking business trips. Our research and discovery led to a seamless process, greatly enhancing user experience.We also analyzed features from the previous app version, identifying opportunities for improvement and strategically sunsetting features that no longer met user needs.
Hypothesis
What do Prosumers expect from the new Logbook?
Simple overview of the open tasks
Quick and easy completion of the necessary tasks to keep the logbook tax compliant
Small amount of time needed to complete tasks
Automation of processes and support in the completion of tasks
Automatic compliance with tax office regulations in order to have the documents at hand at the end of the year
User research
Research learning
The key value of our product is rapid categorization, and we aim to make it even faster whenever possible. I have brainstormed numerous ideas and tested them using the Maze app.
Mainly I tested a the swipe to categorize, and another hold to categorize, the Swiping felt better to the users, but we decided to develop both methods to improve engagement even more.
Further testing & optimization
Through further testing with our customers, we discovered ways to accelerate the categorization tasks even more. By introducing a "swipe right" feature to categorize business trips, we enabled users to quickly identify business trips. Additionally, when the app recognizes a trip as business-related, it can automatically detect the location, business partner, and reason for the trip. This enhancement ensures that users never miss an opportunity and can maximize their tax savings and profits.
Within the next 90 days about 9% of trips have been categorized by quick categorisation (971k quick categorisations out of 9.6M categorisations overall) . Those numbers were enough to see that the users are adopting to a quick categorizing, and it meant that the pattern will keep improving in the next quarters. Mission accomplished!
Time for the new design
Easy trip categorizing
To help user benefit from an easy experience to categorize a trip, we enabled swipe to categorize, we also let them edit their destination address with a pin on the map, and lastly gave them an easy way to review their trips statistics to improve their tax saving.
Tailored experience
Over 5 months of iteration based on the user feedback we refined the UX and UI to the needs and taste of the customers.
Streamlined and modular
I designed the App with modularity in mind. Reusable tiles with different type of information regardless of placement. combination of copy, illustration and information hierarchy allowed me to create a user friendly design for the Logbook App.
visual elements
To create a straightforward and modern visual language consistent with the rest of the platform, from imagery, to map controllers, and marketing components.
