The relay, not a replacement
The useful question is not which product wins every stage. Duolingo's free course can establish a daily habit and basic course knowledge. LangPanda begins where a course app is no longer the full answer: real dialogue, subtitles, individual words, and a review workflow drawn from content already being watched.
That is a relay. The course app starts the routine; the subtitle-to-flashcard workflow extends it when real content becomes comprehensible enough to work with.
What LangPanda adds
LangPanda works across 20+ video sites in 36 languages. Its supplied feature set includes clickable subtitle study, one-click Anki export with audio and screenshots, and a built-in SRS using PandaMemory and FSRS-5. These tools organize material from actual viewing into a repeatable review pipeline.
A course app cannot turn a chosen show or video into the same capture-to-SRS workflow. Conversely, a subtitle tool is not a beginner course. The distinction is why the sequence matters.
Price comparison
Duolingo has a permanent free tier. Its paid prices vary by region and platform, so the current figures remain approximate: Super is ~ $12.99 per month or ~ $84–96 per year, and Duolingo Max is ~ $29.99 per month. LangPanda is $8.88 per month or $58.88 per year, approximately $4.91 per month, with a 7-day free trial and a 30-day money-back guarantee.
Free is a real advantage at the earliest stage. The additional question is whether the current bottleneck is course repetition or building comprehension from real spoken material.
Who should choose which
Choose Duolingo when a free, structured basics routine is the job. Choose LangPanda when following simple dialogue is possible and the next job is working through real content with subtitles, saved material, and review. Learners can use both, but the point of the second tool is to add immersion practice rather than duplicate a course.