TheBestWayToLearnJapaneseWatchingYouTube
SeikaiTV extracts, translates and organizes Japanese vocabulary from any YouTube video.
(It's free to try!)
Enjoy Learning Japanese
Designed Specifically for Japanese
SeikaiTV is designed from the ground up for Japanese only, with none of the annoying compromises that come from handling many different languages in a single tool.
Expert Language Processing, Not Just AI
Our specialized algorithms, designed by Japanese-English linguists, extract language patterns with remarkable and consistentaccuracy.
Catgorized by JLPT Level
Every word and video is categorized by JLPT level using AI. Filter from N1 to N5 to easily match with Japanese that is at your current level.
Track Lexmes, Not Lemmas!
Learn a word once and SeikaiTV will recognize all its variations and conjugations. No more redundant studying of the same core word in different forms.
Hide Furigana To Learn Kanji
You can hide the furigana on words you are studying to advance your learning from listening to reading.
Comprehensible Input Learning
Stop Studying Grammar Rules
Stop The Insanity!
Children learn language words first, with grammar following naturally. Yet tradition insists adults must start with complex grammar rules. This fundamental misunderstanding has made language learning needlessly difficult.
The Vocabulary Gateway
Linguists have discovered a crucial threshold: when you understand 50-80% of words in content, your brain begins to naturally acquire the language. It's like crossing an invisible bridge where natural learning kicks in. The key isn't grammar — it's vocabulary.
The Tools Trap
Current language tools overcomplicate learning by interrupting your viewing with constant translations and grammar explanations. They turn entertainment into exercise. Instead of letting you enjoy content, they become another study session.
Enjoy Learning Japanese
The traditional approach demands mastering grammar first. Research shows the opposite works better: grammar acquisition happens naturally when you engage with understandable content. Build vocabulary first, let grammar follow naturally.
Works Great on Mobile
Full Featured
Every feature has been designed to work great on mobile.
Full Featured
Every feature has been designed to work great on mobile.
Study On the Go
Sneak in a few minutes of study from anywhere. Our spaced repetition system will always be right where you left off, ensuring you are getting just the right word every time to maximize your recall.
Study On the Go
Sneak in a few minutes of study from anywhere. Our spaced repetition system will always be right where you left off, ensuring you are getting just the right word every time to maximize your recall.
Review Your Videos Anytime
All your imported and saved videos are available to watch on your mobile device, anytime anywhere.
Review Your Videos Anytime
All your imported and saved videos are available to watch on your mobile device, anytime anywhere.
What our customers are saying
SeikaiTV has transformed how my viewers learn from my content.They can actually focus on enjoying the videos instead of constantly pausing to look up words. A game-changer for Japanese content creators.
Alex Thompson
Japanese Language YouTuber
I recommend SeikaiTV to all my students for immersion practice.Their vocabulary retention has improved dramatically! The natural approach to grammar acquisition really works.
Yuki Tanaka
Japanese Language Instructor at UCLA
After years of struggling with textbooks, SeikaiTV changed everything.I finally understand how natives actually use the language. Watching anime is actually helping me learn now.
Ryan Patel
N2 Certified Japanese Learner
SeikaiTV has transformed how my viewers learn from my content.They can actually focus on enjoying the videos instead of constantly pausing to look up words. A game-changer for Japanese content creators.
Alex Thompson
Japanese Language YouTuber
I recommend SeikaiTV to all my students for immersion practice.Their vocabulary retention has improved dramatically! The natural approach to grammar acquisition really works.
Yuki Tanaka
Japanese Language Instructor at UCLA
After years of struggling with textbooks, SeikaiTV changed everything.I finally understand how natives actually use the language. Watching anime is actually helping me learn now.
Ryan Patel
N2 Certified Japanese Learner
SeikaiTV has transformed how my viewers learn from my content.They can actually focus on enjoying the videos instead of constantly pausing to look up words. A game-changer for Japanese content creators.
Alex Thompson
Japanese Language YouTuber
I recommend SeikaiTV to all my students for immersion practice.Their vocabulary retention has improved dramatically! The natural approach to grammar acquisition really works.
Yuki Tanaka
Japanese Language Instructor at UCLA
After years of struggling with textbooks, SeikaiTV changed everything.I finally understand how natives actually use the language. Watching anime is actually helping me learn now.
Ryan Patel
N2 Certified Japanese Learner
SeikaiTV has transformed how my viewers learn from my content.They can actually focus on enjoying the videos instead of constantly pausing to look up words. A game-changer for Japanese content creators.
Alex Thompson
Japanese Language YouTuber
I recommend SeikaiTV to all my students for immersion practice.Their vocabulary retention has improved dramatically! The natural approach to grammar acquisition really works.
Yuki Tanaka
Japanese Language Instructor at UCLA
After years of struggling with textbooks, SeikaiTV changed everything.I finally understand how natives actually use the language. Watching anime is actually helping me learn now.
Ryan Patel
N2 Certified Japanese Learner
SeikaiTV's vocabulary extraction is incredible.It catches nuances that other tools miss completely. Perfect for creating learning materials.
Mei Chen
Bilingual Content Creator
Using SeikaiTV alongside my literature studies has been revolutionary.I can actually enjoy reading Japanese texts now instead of constantly consulting dictionaries.
James Brown
Japanese Literature Student
My viewers love how they can use SeikaiTV with my videos.It helps them understand natural Japanese conversations without getting overwhelmed.
Sakura Yamamoto
Japanese Culture Vlogger
SeikaiTV's vocabulary extraction is incredible.It catches nuances that other tools miss completely. Perfect for creating learning materials.
Mei Chen
Bilingual Content Creator
Using SeikaiTV alongside my literature studies has been revolutionary.I can actually enjoy reading Japanese texts now instead of constantly consulting dictionaries.
James Brown
Japanese Literature Student
My viewers love how they can use SeikaiTV with my videos.It helps them understand natural Japanese conversations without getting overwhelmed.
Sakura Yamamoto
Japanese Culture Vlogger
SeikaiTV's vocabulary extraction is incredible.It catches nuances that other tools miss completely. Perfect for creating learning materials.
Mei Chen
Bilingual Content Creator
Using SeikaiTV alongside my literature studies has been revolutionary.I can actually enjoy reading Japanese texts now instead of constantly consulting dictionaries.
James Brown
Japanese Literature Student
My viewers love how they can use SeikaiTV with my videos.It helps them understand natural Japanese conversations without getting overwhelmed.
Sakura Yamamoto
Japanese Culture Vlogger
SeikaiTV's vocabulary extraction is incredible.It catches nuances that other tools miss completely. Perfect for creating learning materials.
Mei Chen
Bilingual Content Creator
Using SeikaiTV alongside my literature studies has been revolutionary.I can actually enjoy reading Japanese texts now instead of constantly consulting dictionaries.
James Brown
Japanese Literature Student
My viewers love how they can use SeikaiTV with my videos.It helps them understand natural Japanese conversations without getting overwhelmed.
Sakura Yamamoto
Japanese Culture Vlogger
SeikaiTV helped me ace the JLPT N1.The way it handles vocabulary progression is genius.Perfect for serious language learners.
Carlos Martinez
JLPT N1 Achiever
I use SeikaiTV to supplement my online lessons.Students learn faster when they can study with content they actually enjoy.It is revolutionizing how we teach Japanese.
Aiko Suzuki
Online Japanese Tutor
SeikaiTV helped me ace the JLPT N1.The way it handles vocabulary progression is genius.Perfect for serious language learners.
Carlos Martinez
JLPT N1 Achiever
I use SeikaiTV to supplement my online lessons.Students learn faster when they can study with content they actually enjoy.It is revolutionizing how we teach Japanese.
Aiko Suzuki
Online Japanese Tutor
SeikaiTV helped me ace the JLPT N1.The way it handles vocabulary progression is genius.Perfect for serious language learners.
Carlos Martinez
JLPT N1 Achiever
I use SeikaiTV to supplement my online lessons.Students learn faster when they can study with content they actually enjoy.It is revolutionizing how we teach Japanese.
Aiko Suzuki
Online Japanese Tutor
SeikaiTV helped me ace the JLPT N1.The way it handles vocabulary progression is genius.Perfect for serious language learners.
Carlos Martinez
JLPT N1 Achiever
I use SeikaiTV to supplement my online lessons.Students learn faster when they can study with content they actually enjoy.It is revolutionizing how we teach Japanese.
Aiko Suzuki
Online Japanese Tutor
Choose the plan that's right for you
Occasional
$6/ month
billed monthly
- 30 Video Imports per Month
- All videos in our growing library
- Spaced repetition review system
- Basic support
- 14 day free trial, cancel anytime
Try For Free
Perfect for casual learners.
Committed
$9/ month
billed monthly
- 150 video imports per month
- Priority support
- All videos in our growing library
- Spaced repetition review system
- 14 day free trial, cancel anytime
Try For Free
Great for studying a few times a week.
Immersed
$12/ month
billed monthly
- 300 video imports per month
- Priority support
- Export to Anki
- All videos in our growing library
- Spaced repetition review system
- 14 day free trial, cancel anytime
Try For Free
For serious learners studying daily.