Pebble

Inspiration

We were inspired by a simple observation: most calendar tools optimize logistics, not human performance.

What it does

Pebble analyzes your weekly schedule and scores it across five pillars: Sleep Recovery (meals, breaks, rhythm) Cognitive Performance Fitness Social Time

Instead of generating a single “optimal” schedule, Pebble creates three tradeoff-based alternatives:Sleep Optimized, Study Optimized, and Fitness Optimized

Each option includes: A total performance score Pillar breakdown Clear pros and cons Tradeoff explanations

How we built it

Pebble is a full-stack web application built using:

next + react + react-dom @google/generative-ai for Gemini calls Tailwind CSS

Challenges we ran into

Avoiding oversimplified scoring Tradeoff modeling Performance explanation

Accomplishments that we're proud of

Designing a structured, explainable performance scoring engine Modeling cross-pillar biological effects Generating tradeoff-based schedule alternatives instead of a single solution Maintaining clarity and simplicity in UI despite complex underlying logic