Android · iOS app familyIn testing
Wink Series
Three apps for shifts, budgets, and trips.
Explore Wink SeriesWebsites, apps, AI & infrastructure
For the way
you live, work,
and play.
We’re Externum, an independent digital development studio. We build websites, mobile apps, progressive web apps (PWAs), AI systems, and games—along with the backend infrastructure that powers them.
Explore our work09Projects & experiences05Ways to explore
The Externum portfolio
Different ideas. The same care.
01 / Everyday & Work
Make room for the rest of your day.
Tools for planning shifts, budgets, trips, and vehicle ownership.
02 / Personalization & Messaging
Make your phone feel like yours.
The Nightstone series is a growing family of Android experiences for your home screen, icons, and conversations.
Android app familyIn development
Nightstone Series
A growing family of Android experiences for a more personal phone.
Explore Nightstone Series03 / AI & Business
Turn information into useful work.
Assistant experiences and research tools being developed at Externum.
AI platformIn development
Caelion AI
An evolving AI platform for ideas, knowledge, and creation.
Explore Caelion AIWeb applicationInternal tool
Externum EBI
Business research with evidence behind it.
Explore Externum EBI04 / Games
Find your next world to explore.
Original worlds, survival adventures, and small games built around one good idea.
GameIn development
Wildveil Kingdoms
A magical frontier shaped by discovery and restoration.
Explore Wildveil KingdomsWeb prototypePrototype
The Sinking Vessel: Survival
Find a way out as the ship goes under.
Explore The Sinking Vessel: Survival05 / Websites & Communities
Bring people and ideas together.
Web platforms and app-like experiences built for communities that keep coming back.
Google Play · Website · PWAPublic platform
Tiles Legacy
A community app for Tiles Survive players, with guides, events, and Tiles Legacy games.
Explore Tiles Legacy
Website · PWAClient work · Live
Fan-Attic Collectibles
A website and PWA built by Externum for Fan-Attic Collectibles.
Explore Fan-Attic CollectiblesBuilt with a long view
One studio.
Many possibilities.
From the experience people see to the systems working behind it, we develop the whole product. Every website, app, AI system, and backend has its own purpose—and the same commitment to thoughtful, ongoing development.