❊ Shipped in 2023
EV Charging Service
How I turned a 2-star app into one of Taiwan's highest-rated EV charging apps
Timeline
2021-2023
Role
Project Lead
Project Manager
UX Designer
UX Researcher
Platform
Mobile App
Stakeholder
CEO
Head of Technical Development
Head of Marketing
Head of Support
Head of Operations
Client
EVALUE
⦿ TL;DR
The redesigned app brought the service back.
↓30%
failure reduced via redesign
2.0→4.5★
App rating transformation
↓50%
Daily complaint calls
"The new interface feels cleaner and more intuitive"
— App Store user feedback
❖ Context
The service was dying
Over 50% of charges failed
✕ User Pain
In Taiwan, almost every charging brands works the same — except my client's.
Users didn't know. The app didn't tell them.
$ Business Concern
Taiwan's EV market was exploding,
but my client's brand was imploding
2.0★ app rating (2021)
100+ customer complaint calls/day
❊ Solution
Multi-sensory design
to make every step error-free
Users skip text, so words weren't enough.
Motion, timing, and touch, each compensates where vision alone fails.
Motion graphics turn a confusing sequence into muscle memory
Users skip text, so I needed more than words to get this right.
Delayed button made confirmation unavoidable and unskippable
Users skip steps out of habit, so I created 5 seconds of friction to make failure impossible.
Haptic confirmation makes the phone proactively tell the user what's next
Visual-only feedback gets missed in noisy parking environments.
Key Learnings
