Palantir Sleep OS Design Challenge
Palantir Technologies · Product Design Challenge
This was a 120 minute timed design challege from Palantir to design a sleep os app that adapts to the user, improves over time, while clearly communicating the design decisions made.
Role
Product Designer
Tools
Figma
Type
UX Design
Duration
120 minutes
The Problem
Tracking data doesn't change behavior.
Most sleep apps already track cycles, provide dashboards, and offer recommendations. Yet users still struggle with poor sleep. More data isn't the answer.
Passive Tracking
Apps collect data but don't act on it.
No Behavior Change
Information doesn't translate to habit.
Users Still Struggle
Despite the data, sleep quality doesn't improve.
The Reframe
Don't track sleep better. Build better sleep habits.
Research
Five root causes of poor sleep.
All five are behavioral or environmental — not informational. No dashboard can fix them.
Routine
Irregular schedules disrupt circadian rhythm.
Screen Time
Blue light suppresses melatonin production.
Diet
Late meals and caffeine delay sleep onset.
Stress
Mental load carries into the night.
Environment
Light and temperature interfere with rest.
Sleep OS
Active — Wind-down in 42 min
Smart Lighting
Dims and shifts tone gradually
Auto Blinds
Controls light exposure
Screen Detection
Flags late-night usage
Reminders
Guides behavior during the day
Learning Loop
Adapts from usage patterns
A context-aware sleep system.
Problem
Users can't consistently act on sleep advice, even when they have it.
Solution
A system that works quietly in the background — adjusting environment and nudging behavior without requiring effort.
Impact
Better sleep without another app to manage.
How it works.
The system continuously learns from behavior and improves with use.
Detect Behavior
App notices late-night scrolling
Suggest Wind-Down
Nudges a low-stimulation alternative
Dim Lights
Lighting gradually shifts to rest mode
Log Pattern
Behavior is stored for learning
Adapt Tomorrow
Next day's nudges adjust accordingly
Four rules every decision followed.
Passive Interaction
Users shouldn't have to think about the app. The system works in the background with minimal input — detecting behavior and adjusting the environment automatically.
Environment Over Interface
Sleep is influenced more by surroundings than screens. The product extends beyond the phone — smart lighting, blinds, and ambient cues that signal the body to wind down.
Actionable Over Informational
Instead of overwhelming users with data, the system provides clear guidance, timely nudges, and simple insights designed to drive behavior — not inform it.
Friction Reduction
The goal is to eliminate barriers before they occur. Every feature was evaluated on whether it reduced the path to better sleep or added steps to it.
Reframing is the work
The most valuable design decision happened before a single screen was drawn — shifting from 'track sleep better' to 'build better sleep habits' changed everything downstream.
Constraints force clarity
120 minutes eliminates second-guessing. Every feature had to earn its place immediately. I now apply that same pressure voluntarily in longer projects.
Design beyond the screen
The most effective solution extended into the physical world. Products that shape environments rather than just interfaces can solve problems apps alone can't.
User Interviews
Conduct interviews to validate behavioral assumptions and test which nudges are most effective in practice.
Smart Home Prototyping
Build a real prototype of the smart home integrations — lighting, blinds, and sensor logic — with actual timing and environmental data.
Longitudinal Study
Measure improvements in sleep consistency and quality over 4–6 weeks to validate whether the system drives real behavior change.
More Work
