Option 1
Duolingo
Gamified, visual-first, free; massive language coverage.
Best for
Casual learners, building vocabulary, daily-streak motivation.
Pros
- 100+ languages including endangered ones
- Free tier robust; Super $7/mo for ad-free
- Strong gamification + streak motivation
- Mobile + web; great for waiting-room study
- Adds AI conversation tutor in 2026
Cons
- Heavy on vocab + grammar drills, light on speaking practice
- Real-world conversational fluency lags
- Translation-based exercises drift from how you actually speak