Tehro is a free and open-source travel and navigation application designed to provide a guide to Tehran Metro. The app is developed by Yasan for Android platforms. It has a modern and minimal design that makes it easy to use. The app supports both English and Farsi languages, which is great for tourists who are not familiar with the local language.

One of the main features of Tehro is its map support. It provides a detailed map of the Tehran Metro system, which allows users to plan their trips and navigate the metro system with ease. The app also supports both dark and light themes, making it convenient to use in any lighting condition.

Overall, Tehro is an excellent application for anyone who wants to explore Tehran using the metro system. The app is user-friendly, and its features make it easy to navigate the metro system. The fact that it is free and open-source is also a plus, as users can access the app without any cost.