From the Store description:
Find the places you need:
- Access a huge database of organizations and use filters to narrow your search.
- Look up important details like contacts, office hours, service information, photos and reviews.
- Search places and addresses even when offline.
- View locations saved in 'My Places' on any desktop or laptop computer, tablet, or smartphone.
- Quickly reach your destination with multiple route options that account for traffic.
- Step by step navigation guides you along your route.
- Keep updated in real time with color-coded traffic information, and see and hear information on accidents, speed limits, radar, cameras, road blocks, etc.
Public transport and walking direction:
- Choose from multiple route options that take traffic jams and public transport connections into account.
- View scheduled service times and estimated time of arrival at every transport stop.
- See individual buses and trams on the map, in real time.
- Find the fastest route on foot, taking advantage of squares, parks and footpaths between buildings.
- Save space on your device thanks to compact maps (Moscow, for example, now takes up 159 MB).
- Browse the selected region’s offline directory of businesses and organizations, with office hours, service information, and other details.
- Download maps for over 1800 cities in Russia, Ukraine, Belarus, Kazakhstan, and Turkey.
Here's Yandex.Maps in action:
Impressive if you can speak the language, to take advantage of all the navigation and POIs. You can grab Yandex.Maps (for WP 8.1 or Windows Phone 10) here in the Store.