Vehicle Health Monitor — Free Offline Car Maintenance Tracker (by LiteDeskDigital)

A free tool by LiteDeskDigital — your car's maintenance history, in one file you actually own.

Vehicle Health Monitor is a single HTML file that turns your browser into a private, offline dashboard for everything that keeps a vehicle running safely: service intervals, fuel economy, tire wear, unscheduled repairs, insurance, and registration renewals.

This is a free download — no account, no subscription, no payment, and no internet connection required after you download it. Open the file, and it works, on a laptop, tablet, or phone, with or without Wi-Fi.

What's inside:

🗓️ Maintenance scheduling that tracks itself

Six factory-interval tasks (oil change, tire rotation, air filter, brake fluid, spark plugs, timing belt) are created automatically for every vehicle you add, each showing a live OK / Due Soon / Overdue status calculated from your real mileage and dates.

⚠️ A built-in risk engine, not just a log

A local, rules-based diagnostics panel cross-references your maintenance schedule, tire tread depth, battery age, and renewal dates, and tells you plainly what needs attention now.

⛽ Fuel economy & 🛞 tire wear tracking

Log distance and fuel used after every fill-up, and record tread depth on all four tires so uneven wear shows up before it's a problem.

🔧 Unscheduled breakdown logging

Log a part replacement once, and the matching maintenance task's baseline resets automatically to match what actually happened to the car.

📋 Insurance & registration renewals

Track policies, registration, and inspections for every vehicle, with color-coded badges as a renewal date gets close or lapses.

🚗 Multi-vehicle support

Switch between every car, truck, or vehicle you own from one dropdown — each with its own independent schedule and history.

🔎 VIN lookup when you're online

Paste in a VIN and the tool calls the free public NHTSA vPIC database to auto-fill make, model, and year. Offline, just type the details in — nothing breaks.

🗂️ Your data, exportable on demand

Everything is stored locally in your browser. Export a complete JSON backup at any time, and re-import it on another device or after a browser reset.

📅 Calendar reminders with real alerts

Generate a standard .ics file covering every upcoming maintenance task and renewal, with a built-in reminder alert (not just a bare calendar entry), importable into Google Calendar, Apple Calendar, or Outlook.

Why it's free: this is a portfolio piece built by LiteDeskDigital to show the kind of lightweight, privacy-respecting tools we build. If it's useful to you, that's the point — and if you'd like something similar built or customized for your own use case, that's what we do.

What you get in the download:

The single .html app — double-click to open in any modern browser

A 16-page PDF user guide covering setup, every feature, backups, and troubleshooting

A technical overview sheet covering how it was built, what is and isn't encrypted, and the upgrade roadmap

Requirements: Any modern desktop or mobile browser (Chrome, Edge, Firefox, Safari). No installation, no server, no signup.