نقشه‌ی همراه کرج is an Android application developed by Rajman Information Structures that provides an offline map and navigation system for the city of Karaj. This app allows users to search for places, streets, and neighborhoods offline, as well as find nearby opportunities with the Near-by service. The app also features a Quick Search function that includes speech-to-text capabilities and the ability to add locations to a personal list. Users can also find friends and traveling companions with the "Who? Where?" feature. Additionally, the app offers routing for both cars and buses in the city of Karaj.

The application is entirely free and provides a comprehensive offline map of the city's streets and places. With the offline search function, users can easily find their desired location without the need for an internet connection. The app's user-friendly interface and speech-to-text feature make it easy to use while driving or walking. Overall, نقشه‌ی همراه کرج is a useful tool for anyone navigating the city of Karaj without an internet connection.