Questions from your real changes
No trivia and no toy problems. Every challenge is about a change you actually shipped.
For Developers, Students & Vibe Coders
Understand the code you ship. Prove what you know.
Ninchi reads your actual changes, asks one focused question at a time, and helps you close gaps before they turn into maintenance problems — while your record of demonstrated understanding grows.
Close gaps while they're small
A missed answer becomes a Teach Me lesson on your own code, and a follow-up question records when the gap has closed.
A record that travels with you
Verified-understanding events accumulate on your profile over time — a record of what you have demonstrated, in your own work.
The record is evidence of demonstrated understanding. It is not a credential, not a measure of ability, and not a promise about hiring or client outcomes.