It is implemented as website, but blocked by regular DPI censorship mechanisms deployed in Russia. They started a blocking campaign against popular VPN provide

It is implemented as website, but blocked by regular DPI censorship mechanisms deployed in Russia. They started a blocking campaign against popular VPN providers as well before elections, making it harder for older and less tech-savvy people to access information from the opposition. I guess that apps have implemented some routing and device caching mechanisms to ensure more user-friendly approach for "regular" people who don't want to spend too much time figuring out how to avoid censorship.