If you are looking to navigate the Moscow transit system, the official app is (Moscow Metro).
Приложения в Google Play – METRO: заказ продуктов на дом
Use the app's digital barcode to enter the store and pay at the register instead of a physical card.
Access current catalogs, "Mega Deals," and personalized discounts. Where to Download: Android: Available on Google Play and RuStore . iOS: Download "METRO Companion" from the App Store . 2. Moscow Metro (Public Transport)