Anki
Free, open-source spaced-repetition flashcard app.
free offline open source
Get it →One-Time Purchase & Offline Alternatives to Duolingo (2026)
Why people leave Duolingo
- Ad-heavy free tier with a limited-lives system that interrupts study sessions.
- Super Duolingo subscription price increased and app pushed AI-generated content.
Language Transfer
Free audio courses using a thinking-method approach.
free
Get it →LibreLingo
Free open-source platform to build and take language courses.
free open source
Get it →