I have been using this app for about 2 years. It's great! I've been learning Russian from the start. The app's strongest suit the community comments. When you have questions, there is no teacher to answer them, rather, it is the community. Lately, it seems that the Russian Language community has been disabled. I can't ask questions anymore. I can't learn anymore. The community isn't even Russians, just peoplewho know Russian, other Duolingo users. I can't keep paying for this service.