Little worlds for curious kids.
Tumbly is a growing island of playful, AI-powered adventures. Each one turns ordinary moments, like a car ride, into something kids talk about at dinner.
Free to start. No ads. Works in the browser, on iPhone and on Android.
One island, many adventures
Every Tumbly world is a place on your kid's island. The island grows and changes as they explore and discover what they love.
RoadStory
Stories about the places you drive past: bridges, forts, giant trees and shipwrecks, told the moment you get there.
Blocks
Show Tumbly the bricks on your table and build a fighter jet, a pirate ship or anything you can dream up, step by step.
Books
Illustrated picture books starring your kid, their favorite animal and the things they're into this week.
Kidphone
A calm first phone with Tumbly built in. No browser, no feeds, just the good stuff and a way to call home.
Made for parents, played by kids
You set it up once. After that it's theirs.
A grown-up signs in
Continue with Apple, Google or your email. Add a profile for each kid, with a nickname, an avatar and an age.
Kids pick a place
Their island shows every Tumbly world. Big buttons, no reading required, and nothing they can wander off into.
The island grows
Stickers, trophies and new spots appear as they explore. Tumbly notices what they love and suggests what to try next.
Our promise to kids (and you)
We're parents too. Tumbly is built the way we'd want it for our own kids.
No ads, ever
No ads, no tracking pixels for advertisers and no selling data. We make money from an optional family plan.
Grown-up gate
Settings, purchases and links out of the app sit behind a parent check that kids can't tap through.
Voices aren't kept
When a kid asks a question out loud, we turn it into text to answer it, then throw the recording away.
Fact-checked
Every RoadStory history story is checked against real sources. Hard history is told gently and honestly.
Simple pricing
Start free. Upgrade when your family is hooked.
Free
- Every pre-made RoadStory story
- 1 kid profile
- 3 "ask Tumbly" questions a day
- Back-seat screen mode
Tumbly Family
or $59.99 a year, with a 7-day free trial
- Up to 5 kid profiles
- New stories made for wherever you drive
- 50 questions a day and 10 "tell me about here"
- An island that evolves every night
- Every new Tumbly world as it launches
Questions parents ask
What ages is Tumbly for?
Most worlds are made for kids 4 to 10. Stories are written for about age 6, and big kids still love the quizzes.
Do I need a Tesla or a special car?
No. RoadStory works with any car. The phone plays stories over your car speakers with Bluetooth, and a tablet or the back seat screen can show the pictures. If you have a Tesla, here's how to use the rear screen.
Does it work outside the Bay Area?
Our first hand-written stories cover Mill Valley, Marin and the Golden Gate. In new places, Tumbly writes and illustrates fresh stories about real landmarks nearby while you drive. They show up on the map when they're ready.
Is my kid talking to an AI?
Only when they tap the "ask" button and a grown-up has turned it on. Answers are short, kind and about the trip. We don't store what they said.
How do I cancel?
On iPhone or Android, cancel in your App Store or Google Play subscriptions. On the web, use "Manage plan" in the parent area. Nothing is hidden.
Be first to try what's next
Blocks, Books and Kidphone are on the way. We'll send one email when each one opens.