Redesigning Malaysia's loyalty and digital payment mobile app to increase growth and build user trust.
2018 - 2020
Mobile
eCommerce
Payment
B2B2C
Overview
Presto is a leading social commerce platform in Malaysia that integrates eWallet functionality with a wide range of lifestyle services in a single mobile app.
What I did
During its major product overhaul, I played a cross-functional role across UX, UI, and design systems, acting as the key bridge between user needs and development execution.
To address these challenges, I helped spearhead a full-scale redesign that introduced a new visual identity, restructured user flows for better clarity, and launched several 0→1 features including eKYC, food delivery, rewards, and the core PrestoPay wallet. These efforts laid the foundation for a more intuitive, engaging, and conversion-friendly user experience.
Results
🧩 Native mobile UI library enabled faster dev cycles & seamless UX
🔼 Boost in brand recognition across Malaysia
📊 30% increase in user engagement
💳 15.7K Gift Cards Redeemed
💰 Over RM 1.8M in transactions
"Charmaine joined our team at a pivotal moment, when we were iterating on the initial MVP version of our e-wallet app, Presto. One of the major challenges of our product market was the need to expand to multiple service verticals, and cram all of those services into a single app, and Charmaine played a key role in taking on that challenge and optimising our app's UI/UX for such an app."
Jensen Bryan Ching
Project & Tech Manager, Presto