Voice AI app

Zibber is for parents and grandparents in India who have never used a chatbot. You tap and talk, and it answers out loud in your language, slipping in English a little at a time. We built it for the founder, from the first screen to beta.

Voice AI app
iPhone app
Founder build

The progress tab with streak, XP and an A2 English level

The problem

Most language apps expect you to read, tap and type. Zibber's users would rather talk, and many of them have never used a chatbot. It had to feel like a patient chat with a friend, not a lesson, and still teach.

How it works, end to end

Getting started
What we built
Sign in with Google or try it as a guest. Pick your language from Hindi, Bengali, Marathi, Telugu, Tamil, Gujarati, Urdu, Kannada or Malayalam, your goal and your daily time. A short spoken placement chat sets your starting level.
What it changed: No forms to fail. People start talking in the first minute.
Tap and talk
What we built
Every turn is heard twice at once, in your language and in English, and the clearer result wins, so mixed Hindi and English is understood. If it mishears, you edit the line and it answers again.
What it changed: People speak the way they really speak.
Answers out loud
What we built
Replies stream sentence by sentence, each with its own voice clip, while the rest is still being written. A warm natural voice for chat, lighter voices for practice.
What it changed: No dead air between turns.
English, a little at a time
What we built
A teaching engine decides when to teach a word, reuse it or gently correct a mistake; the AI decides how to say it. English grows from about 15% of a reply to more than half as your level rises.
What it changed: It feels like a chat with a friend, and it still teaches.
Memory
What we built
Every word taught is saved and brought back after 1, 3, 7, 14, 30 and 60 days. It remembers past chats, picks up where you left off, and opens a return visit by asking for a word it taught you.
What it changed: Words stick, and users are greeted like someone it knows.
Lessons, practice and progress
What we built
Lessons by goal, 8 real-life practice scenarios, audio stories, streaks, XP, a weekly leaderboard, a spoken summary of your progress, and a streak you can share.
What it changed: Reasons to come back every day.
Safety and upkeep
What we built
Every reply is checked before it's spoken: health worries get a careful answer and made-up details are removed. New prompts are tested against an AI judge before they go live, and the team gets an alert if a voice or speech service runs low.
What it changed: Safe for parents who have never used AI, and it keeps working.

The result

Indian languages, plus English: 9
the age of the parents it's built for: 50+
real-life practice scenarios, from shopping to a job interview: 8
on TestFlight with real families: Beta

Zibber is in beta on TestFlight with real families. The founder has the whole product working end to end before launch: voice in and out, memory, lessons, practice and progress.

Parents who have never typed a message practise English by talking, in their own language
No screens to learn: tap, talk and listen, like a phone call with a patient friend who never makes you feel slow
Every word it teaches comes back until it sticks, and it remembers what you talked about last time
The founder has a working voice AI app in real families' hands, ready to learn from before launch