A weekly mystery your kids can only solve with Grandma or Grandpa.
Each of them has half the clues on their own phone, and the case is built from the grandparent's own stories. Solve it together on your usual call, or on the sofa when Grandma visits.
- Free sample, no signup
- No app or password
- No ads, kids' first names only
Calls run dry fast. This gives them something to do together.
One shared mystery. A grandchild who needs Grandpa's clue. The stories come out on their own.
Here's a real case, from both sides.
Neither of you can solve it alone. Grandpa reads his clues out loud, Maya reads hers, and together you cross off suspects until one is left.
Aunt Ruth
Mr. Okafor next door
Cousin Dani
The mail carrierBuilt from your family's stories
We ask the grandparent one easy question at a time. Their answers become the case.
“What were you doing at 17?”
“Playing trumpet in a jazz band. It was 1968.”
The Case of Grandpa Sol's Missing Trumpet
How it works
A parent sets it up
Five minutes: who's playing, how old the grandkids are, and your OK as their parent. Grandpa installs nothing.
Grandpa tells a few stories
We email him a short, friendly chat, one easy question at a time. His answers become the mystery.
Solve it together
A new case on your family's day. On your call or at the table, each of you opens your own link, reads your clues out loud, and agrees on the answer. Every answer is something true from your family's stories, and whoever the story is about gets to tell the rest.
Made to fit each player
Big text, read-aloud clues and puzzles that fit each player. Ages 4 to 17.
Grandpa Sol, every Sunday Grandpa who doesn't do apps
No app, no account, no password. One link in an email, big text, one main button per screen.
best Sunday Little ones who can't read yet
Picture choices, a picture lock, and every clue read out loud. Grandma's half can still be harder.
team Maya & Eli Two grandkids, one team
Brothers and sisters share a side and work it out together, each on their own link.
miss you, see you Sunday An ocean and six time zones away
Each case stays open until the next one, so you play whenever your days overlap. Any call app works.
Whoever took my trumpet had flour on their sleeves.
The baker never leaves the shop on a Tuesday.
21 kinds of puzzle, all made for two
Secret codes, split maps, logic grids, number locks, mazes where one of you has the map, shared crosswords and more. Each case has 4-6 puzzles and a quick game or two, and every puzzle is checked by computer before anyone plays it.
The grandparent's stories run through all of it, so the answers are things only your family knows.
Not another memoir book. A reason to call.
Something to do together on the call
Video call: NoMemoir book: NoCluemoo: YesBuilt from the grandparent's own stories
Video call: NoMemoir book: YesCluemoo: YesThe grandkids take part every week
Video call: YesMemoir book: NoCluemoo: YesMade for little kids and big kids
Video call: NoMemoir book: NoCluemoo: YesA printed keepsake book at the end
Video call: NoMemoir book: YesCluemoo: No
Plenty of families do both: a memoir for the shelf, and a mystery for Sunday.
A year of Sundays for $1.90 a week
Pay once. Nothing renews. Every week or every other week, it's the same amount of play for the price, and you get a full refund within 30 days, no questions asked.
3 months
$35once
$2.69 a week of play
13 weeks of mysteries
6 months
$59once
$2.27 a week of play
26 weeks of mysteries
- Best value
12 months
$99once
$1.90 a week of play
52 weeks of mysteries
Not sure yet? Try one case for $9. It comes off a package bought within 14 days.
- No auto-renew
- 30-day refund
The gift that gets them calling
Give 3, 6 or 12 months. You get a printable card by email and pick the start date. Holiday gifts start January 3, so the first case doesn't land in the middle of the holidays.
Give it as a giftA year of family mysteries
For Grandma Rose, Maya & Eli. Love, Dana
- Starts
- January 3
- Gift code
- EXAMPLE
Questions
What is Cluemoo?
It's a cooperative mystery game for grandparents and grandkids, built from family stories. Every week or every other week, the grandparent gets half the clues and the grandchild gets the other half. They solve it together in about 30-60 minutes over FaceTime, WhatsApp, Zoom or a phone call.
Does Grandma need to download an app or remember a password?
No. It works in any phone or tablet browser. Each player gets their own link by email. Tap it and the clues open. There's no app to install, no account to create and no password to remember.
Where do the stories in the mystery come from?
From the grandparent. After setup, we email them a short chat that asks one easy question at a time, like where they grew up or a dish they're famous for. They type or speak their answers, and the first case is built from them. After each case there's one more question, so the stories keep coming.
Who writes the mysteries?
An AI model, Anthropic's Claude, drafts each case from the stories your family shares. Then every puzzle is checked by computer before anyone plays it, checking it has exactly one answer and that neither side can solve it alone. A puzzle that fails is swapped for one we've already tested. Children's data is never used to train any AI model.
How is Cluemoo different from a memoir service like Storyworth?
Memoir services email the grandparent writing prompts and print the answers as a book. Cluemoo also starts from the grandparent's stories, but turns them into a game the grandkids play with the grandparent on a call. One makes a keepsake; the other makes a weekly reason to talk. Some families do both.
Is it only for grandparents?
For now, yes. Cousins in different homes, step-families, aunts and uncles, and parents living apart are next. When two households share a game, each parent adds and consents for their own kids.
What ages is it for?
Grandkids from 4 to 17. The puzzles get harder with age: picture choices for little ones, decoders and maps from about 8, harder ciphers for teens. Reading is set separately, so a child who isn't reading yet gets pictures and every clue read out loud, and a grandparent can switch on large text.
See it for yourself in 3 minutes.
Play both halves of a real case on your own. No signup, no email.
Play the free sample