Project
Solo project for Master's thesis
Platform
Mobile App (iOS) Dashboard Wearable App
Duration
3 Months, 2023
Role
Research, UI/UX process,
Prototyping, Usability test
BACKGROUND
Lack of real-time visibility into energy consumption
As energy efficiency becomes increasingly important across Europe, many households still struggle to understand and manage their daily electricity usage. This project explores how IoT-enabled mobile experiences can make energy consumption more intuitive, real-time, and accessible.
Jobs-To-Be-Done
Jobs-To-Be-Done was used to identify user goals and needs around energy consumption.
ACTOR
As a student who is living alone at a rent studio
As a woman who is living with husband and daughter at a rent house
SITUATION
When I need to reduce my electricity costs as I stay at home most of the day
When I need to find new electricity plans because I often move to a new place
MOTIVATION
I want to find an opportunity to use a more affordable energy plan
I want to easily contract and contract termination with an electricity company
OUTCOME
so that I can save on electricity costs and use a more affordable energy plan
so that I can change the electricity contract more easily
Scenario
#01
Scenario
#02
Sketch
I sketched key screens to explore feature placement on the landing page and visualize energy data through simple graphs.
Wireframes
I created mid-fidelity wireframes in Figma, focusing on the subscription onboarding flow and AR-based real-time energy monitoring experience.
Home
AR checker feature
AR checker
Start to check the usage
AR checker
Find using devices
AR checker
Check the real-time usage
Checking the real-time energy usage by AR
Subscribe process on Onboarding screens
Customer Info
Select the Family members
See the plans
Explore the subscription plans
Recommendation plans
Suitable plan for the area
Subscribe
Complete to subscribe
Sub features of the app
Monitor
Check the usage overview
Charge
Charging and room control
Device
Devices management
Setting
Subscription plan manage
Style Guide
I created a style guide and UI components using bold, functional colors to enhance data visualization and real-time energy monitoring.
Usability Test
I conducted usability testing with 3 participants to validate the prototype. Participants completed 6 tasks and answered 10 open-ended questions.
Task Results
Participants completed key tasks, including onboarding, AR-based energy tracking, and monitoring. Despite being a new service, all participants successfully completed the tasks and reported a positive experience.
82.5
Average
SUS score
0.56s
Average time spent per task
100%
Total
Completion
Real-time usage
AR-based real-time tracking helped users better understand energy consumption.
Estimated usage
Users valued forecasts of future energy usage based on current consumption.
Monitor screen
Navigation to sub-monitoring screens needed to be more intuitive.
