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Cornell AppDev Internal Hackathon AppJam FA25 Challenge

AppJam is a fast-paced, hands-on product ideation challenge hosted by Cornell AppDev. It’s an internal hackathon where teams of 3–4 create innovative app concepts that solve real problems within the Cornell community over the course of 3–4 weeks. At the end, teams pitch their solutions to AppDev for feedback and the chance to become the team’s next app.

Cornell AppDev AppJam FA25 Challenge

Table of Corntents

  1. The Problem

  2. User Research

  3. Competitive Analysis

  4. Our Solution

  5. The Challenges

  6. Conclusion

Yoobin Lee

Info Sci'27

Design

AppJam Lead

Andrew Gao

CS'28

iOS Developer

Connie Liu

CS'28

Android Developer

Rohan Sabbella

ORIE'28

Marketing

The Cornnectors

Is it just us?

User Research

We interviewed a total of  8 CORNELL students across different fields from Engineering to Business.

  1. Fragmented Discovery Methods

Most information out there isn’t reliable!

  • People find out things from word-of-mouth or Instagram instead of official sites.

  • Club fest is useful but chaotic.

  • Campusgroups is outdated, visually cluttered, and unreliable.

  • “If you’re not already in the sphere of the club, you won’t know.”

  1. Emotional and Social Barriers

Most students participate in events/clubs if they’re friends are going.

  • Introverted or less-connected students are intimidated

  • Culture fit and vibe checks are very important.

  • Hard to find the right people to coffee chat.

  1. Hard to Track

Too many deadlines, info session dates, events, etc.

  • Students get lost in the sauce.

  • Meeting times don’t align with their schedule.

  • Students resort to 3rd party tracking (i.e. gcal, memorizing, spreadsheet)

  • “I forget info session dates”

Emotional and Social Barriers

How might we help students build strong connections and find their community effectively?

A quick onboarding flow that asks for major, class year, and personal/professional interests. It also includes a simple scale for how open users are to exploring clubs or events outside their main interests—encouraging “happy accidents.” The yellow palette adds a warm, friendly feel to ease the intimidation of club recruiting.

Feature 1. Onboarding questionnaire


Feature 2. Cornnector —

Discover Clubs, Events, and People


Cornnector uses the onboarding questionnaire to recommend events, clubs, and potential coffee-chat matches aligned with a user’s interests. Each person card includes a simple one-liner bio to make connecting feel personal and less intimidating.

It also includes:

  • Coffee chat tips and guides

  • Direct link to their LinkedIn profile

  • Easy scheduling based on availability

  • Swipe-style discovery with refresh and undo options for mis-swipes

Feature 3. Cornnecting in Progress —

Saved Items


A saved list where users can add clubs, events, and people they want to revisit or compare later. Perfect for when they’re unsure, short on time, or exploring multiple options. Users can also share their saved items with friends. The experience feels fun and familiar—like adding things to a shopping cart.

Our MVPs (minimum viable product)

Feature 4. Cornlendar

— Centralized Calendar


A central hub for all information sessions, recruitment events, and application deadlines. Users can filter by category or starred organizations, export events to Google Calendar, and receive reminders to stay on track. Cornlendar is color-coded and offers multiple views (month, week, day). Clicking a date expands a detailed list of events happening that day.

But…

The Challenges

Upperclassmen VS Underclassmen Behavior

  • Upperclassmen lock out and interest in exploration drops after sophomore year.

  • Their goals transition to career relevance, leadership experience


    How can we sustain engagement later in college life? 

After coffee chatting 30 underclassmen, offering advice and mentorship…

  1. Verified mentor badge 

  2. Certificate he can add to his resume/linkedin: “Mentored 30 Cornell Students”

  3. Public mentor leaderboard; recognition for “most helpful mentor” each month

  4. Early access to career workshops/events for active mentors

Rohan earns…

😆

Linkedin activity goes UP!

You helped out fellow members of our community!

+

The Challenges Pt. 2

Feasibility Issues

Initially 

  • Web scraping campusgroups & manual input

Later

  • Clubs input their own information

But clubs care about recruiting the right people, increasing event turnout, and visibility, not much about finding clubs


How can we motivate clubs to input their information?



And as an e-board member, Cornnect enables Rohan to…

Promote

Fundraisers, guest speakers, career development events

  • “Top Active Orgs” Leaderboard 

  • More exposure

Track

Applicant attendance for orgs.

  • Coffee chat tracking.



Analyze

“Recruitment Wrapped” provides insights / analytics

  • Applicant pool demographic.

  • Event follow-through insights.

Streamline

Streamline coffee chats

  • Evenly distribute coffee chats.

  • Can better assess cultural fit & true personality

Reflection

This was my first time leading an AppJam team, driving everything from initial ideation to rapid app design on a tight, startup-style timeline while also accounting for real technical feasibility. Unlike a traditional case study, this one was more experimental and narrative-driven; I built a cohesive persona-based story and walked the audience through my problem-solving process step by step.


As the only designer, I owned all UI/UX and branding, balancing my creative instincts with team input and regular check-ins with our product lead to validate my feature ideas and ensure alignment with AppDev expectations.


During the dry-run, the leads challenged us on user retention and implementation feasibility. I quickly conducted a second round of user research with upperclassmen and club e-board members to understand how to keep them engaged long term. I revised the design and pitch deck within two days—while studying for a midterm—and by the final presentation, we received no follow-up questions from the ~70 AppDev members, only positive feedback on our clarity and design direction.


This experience strengthened my ability to lead under pressure, iterate fast, integrate feedback, and deliver a polished, well-reasoned product concept within a short timeframe.

My team's late night grind session @Duffield

Nov. 6th, 2025

So Rohan was able to stay Cornnected throughout his time at Cornell 🎉

😄

🎓

My Role

Lead

Product Designer

Team

1 Product Designer

3 Developers

Timeline

Oct. - Nov. 2025

Tools

Figma

Notion