OpenStreetMap is an open source project that is entirely carried out by volunteers. The maps are pretty accurate. You can consult the maps on the OpenStreetMap website. In addition, many apps have been made by third parties that use OpenStreetMap cards. There are no official apps from OpenStreetMap itself.
The OpenStreetMap website offers detailed maps. You can get directions at the top left if you enter your location and your destination (click on the blue button with two arrows next to the search bar). You can choose between car, bicycle or walking as a means of transport.
If you want to use OpenStreetMap on your mobile device, you can simply open the web browser on your phone or tablet and go to the website (or you are looking for a third-party app, but the quality varies).
You can free download OpenStreetMap and safe install the latest trial or new full version for Windows 10 (x32, 64 bit, 86) from the official site.
Devices: Desktop PC, Laptop (ASUS, HP, DELL, Acer, Lenovo, MSI), Ultrabook
OS: Professional, Enterprise, Education, Home Edition, versions: 1507, 1511, 1607, 1703, 1709, 1803, 1809