Stay in the conversation
Talk to Yuki in a voice-first loop built for natural pauses, false starts, and momentum.
Voice-first Japanese immersion
Speak Japanese before your brain can rehearse it.
Renbi pairs intermediate immersion learners with Yuki — a voice partner who stays in Japanese — and holds the feedback until after the conversation, so the flow stays intact.
Free 10-minute trial — no card required.
Understand native content.
Stop freezing at the first reply.
Get feedback after the conversation, not during.
Built for the plateau
The missing bridge between input and output.
Most language tools are built for beginners. Renbi is built for the gap immersion learners actually hit: you can follow a TV drama, but ordering coffee still means rehearsing the sentence three times in your head.
See it
A look inside Renbi.
The product, not just the pitch — these are screens from the app.
01
Talk to Yuki in real time.
Push to speak and hear her reply in seconds, with the transcript building as you go.
02
Feedback after the conversation.
Corrections, more natural phrasings, and patterns you missed — delivered once you're done, never mid-flow.
03
Every session is saved.
Reopen any conversation, listen back, and build on the phrases you've already used.
Feedback waits its turn
Corrections arrive after the session, so your attention stays on meaning while you speak.
Practice compounds
A persistent character and transcript history turn each conversation into material for the next one.
Stay in the loop.
Occasional updates on new conversation topics and product improvements — at most one email a month.