Smog Test History iconSmog Test History
Smog Test History app icon

Smog Test History

Instantly look up California vehicle emissions history using your iPhone camera.

A native iOS utility that leverages on-device OCR to read license plates and retrieve complete smog test records from California DMV databases — no typing required.

Key Features

Built with a focus on performance, privacy, and user experience.

On-Device OCR

Uses Apple's Vision framework to perform real-time license plate recognition directly on the device — no server round-trips needed.

DMV Data Integration

Queries official California DMV databases to retrieve complete vehicle emissions testing history and results.

Privacy-First Design

No license plates or vehicle data are stored. All lookups are ephemeral, respecting user privacy by default.

Universal iOS App

Runs natively on iPhone, iPad, iPod touch, Apple Silicon Macs, and Apple Vision Pro with a single codebase.

Instant Results

Retrieves and displays smog test history in seconds with a clean, scannable interface for quick decision-making.

Free & Ad-Free

Completely free with no advertisements, in-app purchases, or hidden costs. Built as a public utility.

App Screenshots

A clean, intuitive interface designed for quick lookups.

License plate capture screen

License plate capture screen

Smog test results view

Smog test results view

Vehicle history details

Vehicle history details

Tech Stack

Built with native iOS technologies for optimal performance and platform integration.

SwiftLanguage
UIKitUI Framework
Vision / OCRMachine Learning
AVFoundationCamera
URLSessionNetworking
MVC ArchitectureDesign Pattern
Auto LayoutLayout
Core GraphicsGraphics