A modern Japanese dictionary and study tool

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Chris VasselliMaker@chrisvasselli · Co-founder, Serpenti Sei
Hey Product Hunt, creator of Nihongo here! I spent a long time studying Japanese vocabulary using Anki, Flashcards Deluxe, etc., but I found that studying using premade word lists never worked that well for me. Nihongo is built around studying the words you're encountering naturally through your own hobbies and interests. Flashcard packs are automatically generated from the words that you look up in the built-in dictionary. You can also copy and paste Japanese text into the app like song lyrics, textbook readings, videogame scripts, or books, and it will automatically find all the words contained in the text, and generate flashcards from them. I built Nihongo because it was the tool that I wanted and felt like was missing for studying Japanese. Hopefully it'll be useful for some of you too! I'd love to hear your feedback.
Michael A.@micalaua · Designer
@chrisvasselli Looks like an awesome product. Thanks for building this.
小嶋大貴/Daiki Kojima@dktky18 · Be My Style(TechMedia) founder
@chrisvasselli How nice!! I really appreciate this cuz I'm Japanese. I'd like to interview you and this product as japanese article!
Chris VasselliMaker@chrisvasselli · Co-founder, Serpenti Sei
@micalaua Thanks, glad you like it!
Chris VasselliMaker@chrisvasselli · Co-founder, Serpenti Sei
@dktky18 I’d be thrilled to do an interview! E-mail me at and we can set something up! ^_^
Renzze Mistal@renzzemistal · Digital Strategist & Tech enthusiast
Awesome! Looks great! Perfect for my trip to Japan! :D
Chris VasselliMaker@chrisvasselli · Co-founder, Serpenti Sei
@renzzemistal Nice! Would love to hear if it comes in handy for you! Have a nice trip! =)
Ben TossellPro@bentossell · newCo
I've always wanted to go to Japan! Made it as far as China but would love to experience Tokyo
Chris VasselliMaker@chrisvasselli · Co-founder, Serpenti Sei
@bentossell Tokyo is nice, I’m there right now actually! If you make it to Japan you should visit the Osaka area as well, that’s where I used to live, it’s great. Incredibly friendly people, and really good food. =)
Hey Chris :) I made an app called Swaipu (, which is a flash cards study tool for Kanji, Hiragana and Katakana. When it came time to integrate it with a dictionary app, I chose to only integrate with Nihongo because... Well because it's the best one out there. I use it everyday myself :)
Chris VasselliMaker@chrisvasselli · Co-founder, Serpenti Sei
@mipstian Thanks Giorgio! Swaipu is awesome too. =) I hope to do more integrations in the future, so if anyone else has an app that would benefit from linking to a Japanese dictionary, let me know!
Lynn Fredricks@lynnfredricks · President, Paradigma Software
This looks pretty good! I like that it also includes furigana (the little kana above kanjis) so you can read a sentence without stumbling over an unknown kanji.
Chris VasselliMaker@chrisvasselli · Co-founder, Serpenti Sei
@lynnfredricks Thanks! Yeah, it makes reading things with kanji a lot easier. I use it all the time when I get emails in Japanese. If you have some basic level of Japanese, it can be a lot more helpful just to be able to read the words and look up definitions quickly, rather than use something like Google Translate which tries to translate the grammar as well (often painfully unsuccessfully) .