Duolingo (opens in a new tab)
Habit tool, not a main methodiOS · Android · Web
- Gamified
- Sentence mining
- Daily habit
Duolingo is good at gamifying the process, but I don't treat it as a main study method — and I don't think it's worth paying for.
Where it earns its place is as a daily check-in habit. One trap: it makes it very easy to dabble in a dozen languages at once — don't. Instead, use it for sentence mining: pull the useful sentences out and turn them into cards in a real SRS tool. And don't rush the lessons.
Personally, I don't strongly recommend it as more than a habit-builder.