CakeBank —Making Everyday SavingAutomatic

CakeBank is a take-home assignment I completed while applying for the Product Designer position at Cake.

Throughout the process, I aimed to design a feature as complete as possible — from user flow to interface — including a simulated usability testing phase and iterations based on identified issues.

Due to the limited time frame of the take-home assignment, I did not conduct direct user interviews, but built assumptions based on common behavioral finance insights and user feedback patterns seen in similar financial apps like MoMo and Timo.

I defined two user personas based on those insights:

The Auto Round-Up feature is placed where users naturally interact with their money, ensuring visibility without adding friction.

By distributing touchpoints this way, the experience keeps saving top-of-mind but never intrusive — helping users form a lasting saving habit through repetition and context.

The flow focuses on minimal friction and high clarity:

The interface uses Cake’s signature playful tone, with rounded shapes and warm gradients that convey positivity and approachability.

Visual elements were designed to make saving feel light and effortless, not financial or restrictive.

Since this was a solo assignment, I conducted a simulated post-launch usability test to identify potential issues with user comprehension and flow.

Even though this was a conceptual assignment, it helped me strengthen my end-to-end product thinking — from understanding the psychological motivation behind saving, to designing a flow that feels human and rewarding.

This challenge taught me how small design decisions — like rounding up numbers — can connect deeply with users’ emotions and behavior.

It also reinforced my belief that good design is not about adding features, but about removing friction and inspiring action.