Koin — Making campus food ordering easier with Firebase

Restaurant information was available, but students still struggled to find what they wanted and place an order.

My hypothesis was that helping students find the right information sooner would reduce ordering time. I chose task completion time as the key measure.

I reviewed ordering flows in delivery apps to identify useful patterns and opportunities to improve Koin’s experience.

I designed for two needs: finding a specific restaurant and browsing menus before deciding what to eat.

I added a dedicated search flow with real-time results for students who already knew which restaurant they wanted.

Collapsible menu sections and recommendations for restaurants in the same category helped students explore their options with less effort.

I collected restaurant flyers and made them available as zoomable images so students could scan the menus and read the details.

Restaurants that had not opened yet were labeled accordingly and moved lower in the list, reducing unnecessary visits to their detail pages.

I fixed the call button to the bottom of the screen so students could order after reading a menu without scrolling back up.

The updated app brought together restaurant search, recommendations, zoomable flyers, opening status, and a fixed call button.

A comparison of task completion times before and after the redesign showed an approximately 44% reduction in the time needed to order food, supporting the original hypothesis.