I've got some basic Spanish down using Memrise. I've also saved and practised parts of the Memrise content in an app I built a couple of years ago: wordeys.com.
An app I like but haven't used very much yet is www.clozemaster.com/. I believe it's made by an independent developer.
Cloze Master looks cool, learning in context can help though I think every app does this to some extent. I have currently started with Duolingo, will use it for a few days before trying something new.
👋 Join WIP to participate