🏆 Best Demo Award CS 147 Autumn Expo 2025

Let 'em Cook!

"Turn your kitchen into a playground!"

We've built an app for young adults who struggle to get excited about cooking.

Let 'em Cook is a social cooking app where you can challenge your friends to cooking competitions, discover ingredients you've never tried, and actually look forward to making dinner.

Because cooking shouldn't feel like work.

What We Found

  • People see cooking as just another chore to get through
  • They lean too heavily on convenient recipes (their 'go-tos')
  • There's a lack of a fun or social element to it

What If Cooking Was a Game?

Challenge your friends...

Join/create cooking competitions with specific ingredients, budgets, and time limits

Try new things...

Get pushed out of your comfort zone through experimenting

And have fun doing it!

Turn dinner into something you look forward to!

How It Works

1

Set Up a Challenge

Either create your own challenge, or join one created by another user.

2

Cook Something

Everyone makes their own dish using the challenge rules. Roll up your sleeves, get creative, and make sure to photograph your final creation!

3

Vote & Celebrate

Share what you made and vote on your favorites. No matter the outcome, you still get to eat your creation! Bon appetit!

The Team

Four Stanford students who think cooking should be more fun

Esaw A.

Esaw A.

Mobile Developer

Mayowa A.

Mayowa A.

Mobile Developer

Tina Z.

Tina Z.

Mobile Developer

Butch N.

Butch N.

Designer

Our Design Journey

Follow our complete design process from initial needfinding through final prototypes.

Needfinding

We kicked off our design process by conducting needfinding interviews with a diverse set of participants, exploring the broad problem spaces of "food" and "budgeting" to uncover unmet needs and opportunities.

Experience Prototypes

We developed POV statements and "How Might We?" questions to generate solution ideas, then validated our core assumptions with three hands-on experience prototypes that clearly demonstrated how cooking can be turned into a social and rewarding activity.

Concept Video

We brought our vision to life through a concept video that captures the essence and excitement of Let 'em Cook. Grab some popcorn and check it out!

Low-Fidelity Prototype

We sketched out our initial UI flows on paper, creating a low-fidelity prototype of Let 'em Cook that we tested with sample users to validate our core interaction patterns and design.

Medium-Fidelity Prototype

We built an interactive Figma prototype of Let 'em Cook to further evaluate the app's user experience, refining our design with more realistic interactions and visual elements.

Heuristic Evaluation Synthesis

We received expert feedback on our medium-fidelity prototype through a systematic heuristic evaluation using Nielsen's 10 usability principles (2 additional heuristics from the CS 147 teaching team), identifying key usability issues to address in our high-fidelity prototype.

High-Fidelity Prototype

We built a working high-fidelity prototype and recorded a demo that showcases the full experience of Let 'Em Cook, from browsing challenges to submitting and voting on user-submitted dishes.

Pitch & Poster

Our final pitch and poster summarize the problem space, key insights, and how Let 'em Cook addresses the need for more fun, social cooking experiences.

Final Report

Our comprehensive write-up covering our research, design decisions, evaluations, and lessons learned from Let 'em Cook.