Prepare on Wi-Fi
Travel Mode checks the route, storage, updates, and coverage—then brings maps, language, stories, ecology, and field guides onto Atlas before departure.
Castalia Institute · Proposed architecture
A field guide
to the world.
Offline by design. Connected wherever the family goes.
Atlas Global pairs a child-first learning instrument with World Packs, Travel Mode, and quiet connectivity that steps in only when it is useful.
Visualized concept · hardware in development
World → Atlas → network
The world is the curriculum. The network is support.
Atlas does not become useful when a signal appears. It begins with what is already in the child’s hands, then reaches outward only when connectivity adds something meaningful.
Keep learning offline
Books, notes, translation, field guides, the Gazetteer, iNQ indexes, and local AI remain useful where signals disappear.
Connect with restraint
Atlas chooses the lightest trusted connection available and sends the smallest useful request—not a constant stream of a child’s life.
Automatic by design
The best available path. No carrier lesson required.
A family should be able to cross a border while Atlas keeps maps, observations, questions, reading, and check-ins working—without a child thinking about roaming profiles or network registration.
- 1Trusted Wi-FiFirst choice
- 2Family or local eSIMWhen available
- 3Castalia WorldSIMGlobal continuity
- 4Offline AtlasStill ready
World Packs
Download the world before exploring it.
A World Pack is a locally stored destination library. Before departure, Travel Mode prepares the route and checks that the knowledge a child may need is already aboard.
MapsLanguagesHistoryEcologyGeologyCultureMuseumsiNQ indexes
On arrival, Atlas introduces the place through educational—not commercial—context.
A careful data plan
Connected does not mean constantly uploading.
Atlas processes locally whenever practical. Continuous uploads of a child’s conversations, photographs, browsing, microphone audio, or precise movement sit outside the default architecture.
Local
Always availableBooks, maps, notes, translation, iNQ cache, and local AI.
Tiny
WorldSIM reserveMessages, check-in, identity, status, and recovery metadata.
Medium
Plan dependentWeb pages, text AI, small images, and selected map tiles.
Large
Wi-Fi preferredVideo, updates, full regions, model downloads, and backups.
Family awareness, not surveillance
Freedom grows. The safety net stays quiet.
Families can begin with a bounded Seed experience and open capabilities toward Explorer, Scholar, and Independent. Check-ins and location sharing remain configurable. Lost Mode preserves a small connectivity reserve for recovery when an ordinary quota is exhausted.
Local by default
The child’s work remains close to the child unless sharing creates clear value.
Protected reserve
Management, family messages, check-in, and recovery keep a narrow path home.
The field plan
Prove the journey before promising the world.
WorldSIM is a proposed Castalia service, not yet a promise of unlimited coverage. Each gate tests the experience, cost, support, privacy, and reliability needed for families to trust it.
- 01 5 devices
Bench
Qualify the exact handset, Knox enrollment, SIM behavior, USB, NFC, and optics.
- 02 10–20 devices
Domestic alpha
Test family setup, network switching, messaging, Lost Mode, and real data use.
- 03 6 regions
International alpha
Measure registration and handoffs across the U.S., Canada, Mexico, Guatemala, the U.K., and E.U.
- 04 50–100 families
Family beta
Learn from real journeys, offline failures, support needs, World Packs, and wholesale costs.
- 05 200–1,000 devices
Commercial
Prove sourcing, automated enrollment, billing, updates, and family support.
The final principle
Atlas should not teach children how to use smartphones.
It should teach them how to use the world.
Become a founding family