Vehicle Maintenance Tracker (VMT) is a free utility designed for iPhone users to keep track of their vehicles' maintenance history. With VMT, users can easily add/update their vehicles' information, such as photo, VIN, license plate, year, make, model, tire size, oil filter type, current odometer, total annual maintenance cost, and more.

VMT allows users to set/view/reset service due dates for maintenance items and archive vehicles that are no longer owned. Users can also restore/delete previously archived vehicles. The app provides a convenient way to view/add/update/delete maintenance items for multiple vehicles, including oil change, brake, tire, battery, and other services. Users can even attach maintenance receipt photos and search for particular maintenance records.

Maintenance items are grouped/sorted in a chronicle manner, and users can export/email their vehicle's data in CSV format for printing or sharing. Although the developer, Hai Nguyen, encourages users to contact him with questions, comments, or suggestions and join VMT on Facebook for updates and new feature suggestions, the app itself does not require any personal information or contact with the developer.

Overall, Vehicle Maintenance Tracker is a user-friendly and practical tool for keeping track of your vehicles' maintenance history.