Dolphin Café — A 5-day Design Sprint

I’ve always wanted to open a cafe where people can take some steam off and enjoy life. As a university student, I live and die with coffee, tea and dessert that keep me awake and also help me wander around a bit from heavy study schedule.

I decided to do a design sprint. Hypothesizing that my cafe locates at campus, a.k.a my customers are mostly university students or faculties. What is my role? Well, I am responsible for idea, brand design, UX research to design, yes, everything;)

Dolphin Café was done from January. 29th to Februry. 2nd of 2018 with: me, me and me.

“A book with a magnifying glass on top of it, next to a pen, and globes on a desk in Cianorte” by João Silas on Unsplash

Having an idea in mind, I started to do competitive analysis with my strongest competitor-Starbucks. OUCH. There are two Starbucks at GeorgiaTech, one in TechSquare, more accessible to people who come here with friends and socialize because of its open area and easy access to all directions. The other one is inside the Undergraduate Clough Commons, next to library. (It offers free coffee at exam week’s midnight!) Undoubtedly this store mainly serves for hardworking students. I chose the second one as my main competitor since my main mission was to help students, like me, to better coordinate their life with study.

Process made by Gaby

Day 1 Research — test the water


I distributed a survey about starbucks whiteboard and mobile menu, got 133 responses. I mainly care about: Who use menu? Why do people use menu? Why not people use menu?


I did remote unstructured interview among a Wechat group of 500 members. About 11 people joined this topic chat.

Insights from interview


I started to observe starbucks’ in-store whiteboard and mobile menu.

credit to EasyOrderStartbucks

Above all, the biggest concerns among customers are:

  1. Long waiting time during peak hours
  2. Unfamiliarity with the menu

Day 2 Research —Categorize user requirements

Affinity Diagram

After organizing findings from interview scripts and surveys, people have similar concerns as in task analysis from observation:

I want to get drinks ASAP.
I want to make an informed decision.


I came up with 6 different ideas based on solving users problem of:
1. Getting order without wasting time 2. Making an informed decision.

(The designs attached were done in Day4 & 5)

Day 3 Design — Sketch ideas and gather feedbacks

I feel you. You’ve seen some of my final works, you probably don’t see the value of reading the rest of this article;)

However, it is the process that helped me get to the final design. Without it, I definitely cannot make my final product the way it is right now.


Low-Fidelity prototype

After hand sketch, I quickly used Balsamiq to build Low-fidelity prototype.

Cognitive Walkthrough

Instead of immediately moving on with Hi-fidelity prototype, I decided to sit back and see what experts are thinking about the design idea and whether the interfaces make sense. I have had the great pleasure to invite designers from Google, Salesforce to do cognitive walkthroughs for my low-fidelity prototype.

Special thanks to Shuang, Spell and John!

Day 4 Design — Make it colorful


Why blue? You just asked. Well, do you know what Atlanta is famous for?
Aquarium it is, where I got inspired by dolphin and blue ocean;)


Next step is to choose icons for my menu. The reason why I didn’t use real photos is I can’t quite get access to real photos ;( But icons have be a good replacement;)

High-Fidelity prototype

After taking feedbacks from senior designers into consideration, I gained confidence to move on with Hi-fi prototypes in Sketch.

Day 5 Design — Make it interactive

Interactive Prototype

After completing all Hi-Fidelity prototypes at Sketch, I started to play around with it in Principle.

As it says, enjoy! The full version:

Appendix: TV

Well, I have to think about how my menu goes in store, what if my customers forget their phone at home? (I know you won’t)


First, I need customers to know there is a mobile app where you can get free pick-up! So a QR code is a necessity. What would be the motivation? Well, how about a free drink the first time?

Secondly, themes should be colorful and dynamic, because in a busy environment as a cafe, plain menu (as a whiteboard) cannot catch one’s eye (73% people have no idea there is a menu at Starbucks), not to mention propagation.

Full version video here:

Look at that sunset, how beautiful it is!

Where am I doing now? Wrapping up!


Happy Friday!

Please do visit my cafe when you see it in the coming future.

See more of my works here:

If you want to contact:

Please show some love by clicking at ‘hands’.

Last advertisement, I promise: I’m actively seeking INTERNSHIPs!!!

Gaby SG