Second Voice
A translation layer for a bilingual household where the assistant only speaks one language. Built for Say It Back — build a voice interface for someone who cannot comfortably use a screen. Bidirectional live translation under two seconds. The interface is deliberately narrow: one path, done properly, rather than a broad surface that half-works at the deadline.
Gallery
Screens
Second Voice — main view
Second Voice — result state
On the clock
What shipped, what didn't
Completed in time
Bidirectional live translation under two seconds.
Unfinished / faked
Two languages hardcoded.
Obstacles
A dependency version mismatch cost six minutes. Pinned it and moved on.
Lessons learned
Scope down before the timer starts, not at minute 20 when you're already committed.
Process
Prompting approach
Started from a single system prompt describing the user and their constraint, then iterated with the assistant on the Second Voice data model before writing any interface code. Full prompt log is in the repository under /prompts.
Fairness
Disclosures
Declared by the builder at submission time, visible to judges before scoring.
Started from the official framework starter template, unmodified.
Judging
Public feedback
Judges' private notes stay private — this is what they chose to say publicly.
Hana Kobayashi
Principal Research Engineer, Independent
The idea is strong and the execution is most of the way there. The demo path broke once, which is what separates this from the top three today.
Ravi Anand
Head of Design, Tessellate
Solid build with a clear user in mind. The interface is doing less than it could — a second pass on hierarchy would lift this considerably.
Tomas Eriksen
Developer Advocate, Independent
Solid build with a clear user in mind. The interface is doing less than it could — a second pass on hierarchy would lift this considerably.
Discussion
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