Sarah Oliver

Overview

Solo Developer · iOS App · July 2024 – May 2026 · Available on the App Store

Spot a Pot is an iOS app built with SwiftUI and Firebase that helps users find, rate, and review public bathrooms across all 50 US states. The app features real-time map integration, a fun poop-emoji rating system, and a community-driven review platform.

View on App Store → View on GitHub →

Technical Highlights

Built with SwiftUI, Firebase (Auth + Firestore), and MapKit
Geo-bounded Firestore queries with client-side caching and session read limits for cost optimization
Python data pipeline using OpenStreetMap Overpass API and Google Maps Geocoding to populate 40k+ bathroom locations
Multi-category rating system with computed averages stored directly on documents to minimize reads
Leveraged AI development tools (Claude Code, MCP servers) to accelerate development and ship faster

Features

Interactive map with tappable bathroom pins and search
4-category poop emoji rating system (Cleanliness, Wait Time, Toilet Paper, Ease of Use)
User profiles with review history and emoji avatars
Favorites list and share-with-friends functionality
Get directions via Apple Maps integration