Yes. You'll be able to use the Fluent Forever App to learn any sentences in your target language. So if you get an example sentence of any word or grammar topic in your class, you can put that into the App and learn it long term.
Note that if your class is simply teaching you individual words and translations, or asking you to memorize conjugation/declension charts, you'll need to search for full example sentences of those words or conjugations/declensions in order to learn them with our app. (But that's how you should learn them; simply memorizing charts or translations isn't going to get you to your fluency goals!)