Mobile Application
Halvenok
My role: Senior Product Designer
Team: Product manager, UX/UI designer (me), front-end developers, back-end developers, testers
A handy mobile app for parents to monitor their children's finances.
You can top up your child's card, give tasks and give pocket money for their fulfillment.
About project
A smart and engaging app for modern families.
Parents can easily manage their children’s finances — from topping up their card to setting fun tasks and rewarding achievements with pocket money.
It helps kids learn how to handle money responsibly while staying motivated.
Task
To create a parent-friendly application for controlling children's finances.
Problem
Lead designer of the ‘adult’ part of the Halvenok app.
Also involved in the solution were the designer of the ‘children's’ part of the app, analyst, tester, iOS and Android platform developers.
Research
The research was conducted directly at the NLMK plant, at the coal storage facility.
CusDev
Personas research
First, I conducted quantitative and then qualitative interviews with managers and workers in warehouses and hot shops to understand exactly what software they needed and what problems it should solve.
How they currently solve their problems.
Pain points
Job stories
User map
I’ve created a concise and organized product structure, ensuring information is logically arranged for optimal user experience.
Photo of the warehouse (taken from a drone) with preliminary stack locations (the stacks were drawn in Paint by the shift supervisor).
These photos were needed to develop prototypes.
Wareframes
UI
The user interface was designed to accommodate a diverse audience — from older coal warehouse workers with conservative attitudes toward digital tools to younger specialists familiar with modern interfaces.
I optimized the UI for different physical interaction patterns as well, ensuring comfortable touch targets and clear visual hierarchy for users with large hands or working in gloves.
Design System
I used the main components from the company's general design system, but I also developed custom components.
Interface
Each stack is interactive and can be dragged from place to place with the mouse.
Mesh for convenient stacking in warehouses.
Result
54 people participated in testing:
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Warehouse workers
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Train drivers
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Shift supervisors
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Engineers
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Blast furnace operators
99%
Eliminated the issue of shifting responsibility between plant employees
20%
Reduced coal consumption
89%
Positive feedback from employees
It became possible to work remotely with the warehouse — to monitor coal inflow and outflow directly from the office.
Management gained the ability to track coal movement in the warehouse and in the blast furnace shop: which coal was loaded into which furnace and when, generating short reports instead of sorting through piles of paperwork.
