For heritage speakers
You already speak it.
Now own the words.
You can hold a conversation, but the precise word never comes. Koboshi closes that gap.
Who this page is for
If you grew up between two languages, this is for you.
- 🇮🇳South Asian familiesSchool in English; Urdu, Hindi, Punjabi, or Bengali stays spoken-only.also🇵🇰 🇧🇩
- 🇲🇽Hispanic families in the USFluent Spanish at home, life in English everywhere else.also🇵🇷 🇨🇺 🇸🇻
- 🇯🇵Kikokushijo in JapanNatural spoken Japanese, but business katakana like コンセンサス feels foreign.
- 🇨🇳East Asian heritage speakersChinese, Korean, and Vietnamese across the US, Canada, and Australia.also🇰🇷 🇻🇳
- 🇹🇷Diaspora families in EuropeTurkish in Germany, North African in France, Russian-speaking in Germany.also🇲🇦 🇷🇺
- 🇵🇭Filipino families abroadTagalog at home, everything official in English.
Questions
The things heritage speakers ask first.
I can already speak the language. Is this still useful?
Yes. Koboshi is built for exactly your case: depth and precision, not basics.
Will it make me study beginner words?
No. It measures against your own level. Words you know stay out of your reviews.
I understand everything but freeze when I speak. Is that normal?
Very normal. Understanding usually runs ahead of speaking: you recognise far more words than you can produce, and the gap is widest for formal words you rarely had to say. Reviews make the words you know faster to recall and add the precise ones you are missing.
Which languages does it support?
21 languages today, including Spanish, Japanese, Mandarin, Korean, Hindi, Arabic, Urdu, Turkish, and Russian, with more added steadily.
Where next
Living between two languages?
The words are closer than they feel.
Add a few words at a time. Watch the precise ones become yours.