[pigcat]

+1 for Mango Languages (available free with my Library Card)

It's very well designed. The spaced repetition is effective. The lesson order is sensible. The Romanian lessons have a real speaker narrating the pronunciation, compared to Duolingo's AI narrator, which was terrible for learning.

I tried Duolingo briefly but the over-gamification wasn't for me. Everything was about gems and lives, major turnoff.