48-hour native iOS MVP

Sentinel

Predictive home maintenance powered by climate-risk AI.

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The preview shows the core loop: vulnerability score, action plan, and historical risk timeline.

role
Design Engineer — designed & built
proof
public repo / demo video / public post
result
Winner · Google × SCAD FLUX Hackathon 2025

decision

Predictive iOS maintenance app that turns weather risk into prioritized homeowner actions.

proof

Designed in Figma → built a native SwiftUI MVP → presented as a working hackathon prototype.

result

Winner · Google × SCAD FLUX Hackathon 2025

Recruiter proof

Built fast, shipped native, publicly verifiable

48h

Hackathon build

SwiftUI

Native iOS MVP

Public repo

Source-code proof

The problem

Homeowners manage their biggest asset on gut feeling

Climate risk is hard to see until it becomes expensive. Sentinel turns hidden weather exposure into a score and a next action.

$200K+

Storm damage ignored

$100

Basic inspection

Target user

Alex, 35

Doctor · New homeowner

Moved into a 2010 home

Worries about hidden storm damage

Wants to stop guessing and start preventing

The build

Designed and shipped in one sprint

Designed in Figma

Rapid visual prototyping

Risk screens were designed to make severity obvious without burying the homeowner in data.

Engineered in Swift

Native iOS implementation

SwiftUI turned weather inputs into a working vulnerability score and maintenance flow.

48h MVP proof

Weather risk -> score -> task

The dashboard makes weather exposure, home vulnerability, and risk breakdown visible at once
The dashboard makes weather exposure, home vulnerability, and risk breakdown visible at once
The action plan turns the risk signal into a prioritized maintenance task
The action plan turns the risk signal into a prioritized maintenance task

The work

Three surfaces of predictive maintenance

Historical risk timeline

Feature 1

Historical risk timeline

Past weather events make risk concrete instead of abstract.

Weather alerts & forecasting

Feature 2

Weather alerts & forecasting

Forecast alerts show what the homeowner should prepare for next.

Actionable maintenance tasks

Feature 3

Actionable maintenance tasks

Tasks convert the score into ranked preventive action.

Outcome

Shipped a fully functional iOS MVP in a 48-hour sprint, validating predictive maintenance through real climate-data integration and user testing.

Won 1st place at the Google × SCAD FLUX Hackathon 2025, proof that climate-risk analytics can be turned into a usable, native homeowner tool, fast.