CaptionLearn

CaptionLearn vs FluentU

FluentU wraps videos in a course: quizzes, flashcards, an AI tutor and apps. CaptionLearn does only the core part: tap any subtitle word on any YouTube video for its meaning in that sentence. FluentU Plus costs US$29.99 a month; CaptionLearn starts free and its paid plans are monthly.

CaptionLearn and FluentU side by side

Checked on 18 October 2026 on each product's own site. Prices change; follow the source links for today's.

CaptionLearnFluentU
Price (monthly)Free (30 lookups); Standard €4.90/month, Intensive €9.90/monthPlus US$29.99/month, Super US$39.99/month source
Price (yearly)No yearly planPlus US$143.99/year, Super US$199.99/year source
VideosAny YouTube video with captionsAny YouTube or Netflix video with subtitles in the language source
PracticeExport to Anki, Quizlet, Brainscape, LingQ, CSVPersonalised quizzes, flashcards, courses, AI tutor source
AppsBrowser, desktop and phoneWeb, iPhone, iPad, Android and a Chrome extension source
TrialFree plan, no card14-day free trial source

Where FluentU is better

Pick FluentU if

  • you want a structured course with quizzes
  • you want speaking practice with an AI tutor
  • you watch Netflix too

Pick CaptionLearn if

  • you want the click-a-word part without paying for a course around it
  • you want phrases and separable verbs recognised as one
  • you'd rather start free and stay monthly

What CaptionLearn does well

Transcript · estap a word
1:11adelante. Me da igual el nivel que
1:14tengas, me da igual cuánto tiempo lleves
1:16aprendiendo español, me da igual que
llevesyou’ve been← llevar

I don’t care what level you’re at, I don’t care how long you’ve been learning Spanish, I don’t care whether

1 / 7

The meaning in this sentence

Each word is translated with the sentence around it, so you get what the speaker means, not a list of dictionary entries.

What it doesn't do

Questions

Is CaptionLearn a course?

No. It is just the video and its subtitles: you pick what to watch, tap what you don't know, and keep it with its sentence.

Can I try both for free?

CaptionLearn has a free plan with a set number of lookups each month, no card needed. FluentU offers a 14-day free trial.

Are you affiliated with FluentU?

No. CaptionLearn is not affiliated with FluentU. Their names are trademarks of their owners.

Try it on a video you want to watch

30 free lookups a month, no card needed.

Start for free
Also compared: Language Reactor alternatives · vs Lingopie · vs Dreaming Spanish

CaptionLearn is not affiliated with any product named on this page. Names are trademarks of their owners.