Geology, disguised as play · ages 8–12
StoneTell names the rocks your kid keeps pocketing — then lets the rock tell its own story. Screen time that comes back as a geology lesson they actually asked for.
iPHONE APP · NO ACCOUNTS, KIDS JUST EXPLORE
CASE FILE 001
Every rock is a case with real suspects. StoneTell never just hands over the answer — your kid closes the case.
THE SUSPECTS
THE EVIDENCE
THE VERDICT
Quartz — “It took 200 million years to grow me. I can wait one more question.”
THE CABINET
Photographed, named, numbered, stamped. The field journal fills up like a museum drawer — one drawer per obsession.
Very likelyCu₂CO₃(OH)₂
PossibleChalcedony · SiO₂
Very likelyFeS₂ · “Fool’s gold”
SuspectedVolcanic glass
PossibleCaF₂ · glows under UV
UncertainChalcedony · SiO₂
Stamps land on the cards that earned them. Rare finds get rare ink.
DEEP TIME, PLAIN WORDS
Identification is just the first page. Each rock narrates where it was born, what it survived, and why it ended up under your kid’s shoe.
Very likely
“I was a river of fire once — cooled so fast I never had time to grow crystals.”
Stories come in layers — a short telling in the rock’s own voice, then field notes for the kid who wants to dig deeper.
Written for kids, in plain words. No encyclopedic walls of text, no dumbed-down cartoons.
And when StoneTell isn’t sure, it says so — then turns the doubt into the next experiment.
FIELD PROCEDURE
One photo of any rock — the app even asks for a coin next to it, like real field notes.
StoneTell names its best candidates — and says honestly how sure it is. Never a fake “99.9%”.
Close call? Kid-safe field experiments — a coin scratch, a streak rub, a fridge magnet — settle it.
The rock tells its story, the card gets numbered and filed. A collection that grows every weekend.
INSIDE THE APP
FOR THE ADULT IN THE ROOM
Rocks are identified right on the phone, and your kid’s photos stay in the app. No photo is uploaded unless a grown-up turns on “Second opinion” — and even then, it isn’t kept.
A single-player field journal — not a social network, not a casino. Nothing is engineered to keep your kid scrolling.
StoneTell says “probably” and “not sure” out loud — then turns uncertainty into the detective game. That’s the whole point.
Designed with COPPA in mind. Kids are never asked for a name or an email. Sharing, email sign-ups, “Second opinion” and deleting data all wait for a grown-up.
IN THE APP: NO ADS · NO ACCOUNTS · NO TRACKERS · NO LOCATION TRACKING
EXPEDITION ROSTER
StoneTell is an iPhone app for ages 8–12. Grown-ups download it — kids get the good part.
We’ll email you the link when it’s out.
One email with the link, nothing else — it’s just a list, not a funnel. Privacy
Welcome aboard, field geologist’s grown-up.
FIELD NO. ST-000-0000
We’ll email you the App Store link — once. Meanwhile: keep an eye on the driveway gravel — it’s evidence.
