Your child just got a letter. From Miss Rosie. She needs their help.

Everything your child gets for $99

8 real mystery letters, mailed to your child

Wax-sealed, written with a real pen

The expedition map, hidden on the letter backs

Companion app free for 1 year, a $120 value

Screen time earned by completing missions

Letter 1 ships August 1, 2026

Reserve Your Child's Spot

The moment everything changes

It starts with a flag up on the mailbox.

Something's in the mailbox

And for once, it isn't for Mom or Dad.

Their name. Real ink.

A heavy cream envelope. A real stamp. A wax seal pressed with a compass star.

The seal cracks

Like the opening of a secret. Inside: real handwriting, drawn by a real pen.

The first line

"Dear Explorer, we found something strange in the canyon..."

She needs them

Not a class. Not an audience. Your child, by name. The expedition cannot go on without them.

That moment is the product. Everything else just delivers it.

The question every parent asks

"Will my child actually care?"

Real envelope. Real stamp. Addressed to them. Their name in ink, their mail in the mailbox.

Miss Rosie needs their help. She isn't teaching them. She's stuck without them.

There are real secrets. Wax seals, a hidden map, messages that only appear with heat.

Even screen time joins the adventure. It's not the bribe. It's the treasure they earned.

Kids don't get this from entertainment. They get it from being needed.

Meet the explorers

One adventurer. One troublemaker. One mystery they can't solve alone.

The Adventurer

An explorer with a notebook, a compass, and a world called The Old Lands to chart. The best hiking guide your child will ever have.

But she can't solve everything alone. When she's stuck, and she is often stuck, she writes to the one explorer she trusts: your child.

The Troublemaker

A small green dinosaur with a magnifying glass and no sense of caution. His rule is "look closer," which is exactly how he keeps wandering off the trail.

Half the mysteries begin with the same four words: "Darwin, what did you do?"

How it works

The mailbox starts it. Your child finishes it.

A letter arrives

Addressed to your child, sealed in wax. Something has gone wrong on the expedition, and Miss Rosie chose them.

Your child helps her

Each letter unlocks missions in the app. Reading, math, and critical thinking hide inside puzzles they're desperate to solve. No grades. No failure.

Screen time is earned

Finished missions unlock the screen time you set. The tablet becomes the reward. Miss Rosie does the negotiating.

Start the Adventure, $99

Series One · Eight letters, one mystery

Real mail. Real pen. Real magic.

Dear Explorer,
We found something strange in the canyon...
We can't figure it out. We need your help.

— Miss Rosie 🐾

The eight-piece topographic expedition map, drawn in pen

✒️

Written by a real pen

Every letter is drawn stroke by stroke with a real fountain pen, then sealed in wax. No printer can fake it, and kids can tell.

🗺️

The map is hidden in the letters

The back of every letter is a piece of the expedition map. By Letter 8, your child has assembled the whole thing.

🔥

Secrets revealed by heat

Parts of the map are invisible until warmed. Your child, a hair dryer, and a secret message slowly appearing on the page.

Series One · The complete arc

Eight letters. One mystery. A real ending.

Letter 1

The Strange Tracks

Letter 2

The Missing Map

Letter 3

Darwin Disappears

Letter 4

The Hidden Message

Letter 5

The Canyon Clue

Letter 6

The Forgotten Camp

Letter 7

The Final Puzzle

Letter 8

The Mystery Revealed

No subscription that drifts on forever. The story builds, the map assembles, and Letter 8 ends it. Your child finishes something.

Companion app · free for your first year, a $120 value

The letters lead. The app follows.

Each letter unlocks short, thinking-heavy missions where Darwin tags along. The games adapt invisibly to your child. No levels, no scores, no way to fail.

When missions are done, the app unlocks the screen-time allowance you choose, then steps aside. Less battle, more earned adventure.

Future Explorer Stories

The stories we're building toward

We wrote these ourselves. They're the bar we hold Letter 1 to, and in July they get replaced with real pilot-family words, unedited.

Example · real stories arrive July

"My daughter has never once checked the mailbox. Now she beats me to it."

A future pilot parent

Example · real stories arrive July

"My son asked when the next letter comes. Then he asked again at breakfast."

A future pilot parent

Example · real stories arrive July

"This is the first educational anything he has ever wanted to do."

A future pilot parent

Become a Founder Family

Reserve your child's place on the expedition.

Series One · First 100 Families

The complete Series One adventure

$99 one time

The companion app alone is a $120 value. Founder Families get everything for $99, once.

8 real mystery letters, wax-sealed and written with a real pen, mailed to your child
The expedition map, hidden one piece at a time on the back of every letter
Companion app, free for your first year, a $120 value
Screen time your child earns by helping Miss Rosie, on the terms you set
A Founder Number, 1 to 100, and a Founder's passcode inside the app
First access to Series Two, at your locked Founder price

Letter 1 ships August 1, 2026. You choose your mailing address and pay securely on the next step.

Founder promise: if the first letter does not land the way we describe, write to us and we will make it right.

100 of 100 Founder Family spots remaining

Founder Number 1 to 100 Locked Founder price First access to Series Two Founder's passcode in the app

Questions parents ask

Good questions deserve real answers.

When will my child's first letter arrive?

Letter 1 ships August 1, 2026. After that, a new letter arrives every few weeks until the Series One mystery is solved, eight letters in all.

What ages is this for?

Miss Rosie is built for ages 4 to 13. The letters are read together at the youngest ages and read alone as your child grows. The companion app quietly adjusts to your child.

Do I need the app to enjoy the letters?

The letters lead the adventure. The app is the companion that brings each mission to life, and it is free for your first year. You can do a great deal with the letters alone.

What exactly does the $99 cover?

All eight Series One letters mailed to your child, the hidden expedition map across their backs, and the companion app free for one full year. One payment, no surprises.

Is this a subscription?

No. Series One is a complete story with a real beginning and a real ending. You are reserving the whole set, paid once.

Which devices does the app support?

iPhone and iPad today, with Android on the way. The letters work with or without a device.

Can I get a refund?

Yes. If the first letter does not land the way we describe, write to us and we will make it right.

Is my child's data safe?

The learning app keeps your child's activity on the device. We collect only what we need to mail the letters and reach you about your order.

Where do you ship?

The United States to start. If you are outside the US and want in, write to us and we will see what we can do.

Become a Founder Family, $99