RexGPT - Kids AI Friend

Meet your child's new favorite learning companion — completely offline, totally private.

RexGPT is the first AI chat app designed exclusively for young children that runs entirely on your device. No internet required. No data collected. No ads. Just pure, joyful learning.

4 Loveable Characters. Endless Curiosity.

Choose the friend that matches your child's mood:

Rex – An energetic young dinosaur obsessed with fossils, prehistoric life, and Earth's wonders. Perfect for little explorers who ask "why" about everything.

Luna – A calm, patient owl who breaks down big ideas into small, easy steps. Loves nature, books, language, and the night sky.

Max – A zippy space robot who makes science and math actually fun. Real numbers, real facts, spark-your-imagination questions.

Finn – A thoughtful ocean pal who explores sea creatures, world geography, and cool stories of discovery — always in a gentle, unhurried voice.

Learning That Sounds Like Play

Every conversation is an education in disguise. Characters explain new vocabulary in context, share accurate facts, tell short stories, and gently challenge kids to think deeper — all without lecturing or talking down. Your child learns the way they naturally should: through curiosity and conversation.

Speak It or Type It

Too young to type? No problem. Kids can tap conversation starters or simply tap the mic and talk. Characters respond out loud in their own unique voice — Rex is warm and bouncy, Luna is calm and soft, Max is zippy and fun, Finn is deep and gentle.

Built for Parents Who Care About Privacy

100% offline after the one-time model download
Zero data collected — conversations never leave your device
No accounts, no sign-ups, no subscriptions
Parent-protected settings behind a puzzle gate (no 4-digit PIN a child can memorize)
Screen time controls — set daily limits and get gentle wind-down reminders
Age-adaptive responses — tune the vocabulary and response length for ages 3–4, 5–6, or 7–8
Content safety filters built-in — age-inappropriate topics are automatically and gracefully redirected
Why RexGPT?

Every other AI app sends your child's conversations to a cloud server. RexGPT doesn't. The AI lives entirely on your phone. No Wi-Fi needed at the dinner table, on a road trip, or at bedtime. Your child's words stay your family's business.

This isn't a chatbot with a cartoon painted on it. RexGPT is a ground-up rethink of what a kids' AI experience should feel like — safe enough for parents to hand over, engaging enough that kids actually learn, and delightful enough that they'll keep coming back.

Perfect for ages 3–8.